Actual problem is not shown in error message

[Ekaterina Chernova]

Steps To Reproduce:
1. Clone repo from https://github.com/murano-project/murano-app-incubator.
2. Create ZIP archive with io.murano.apps.java.HelloWorldCluster application.
3. Upload this application to Murano (and don't upload other applications such as Tomcat/PostgreSQL).
4. Create new environment and try to add HelloWorldCluster application to this new environment.

Expected Result:
Error message about non existed application dependencies: PostgreSQL application, Tomcat Single application and Tomcat Cluster application. We should show the error message with the detailed description about broken dependencies and with name of non existed dependencies.

Observed Result:
Error in horizon dashboard: "Danger: An error occurred. Please try again later."

in dashboard logs we can see the following traceback:

Traceback (most recent call last):
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 137, in get_response
    response = response.render()
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/response.py", line 105, in render
    self.content = self.rendered_content
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/response.py", line 82, in rendered_content
    content = template.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 140, in render
    return self._render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 134, in _render
    return self.nodelist.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 840, in render
    bit = self.render_node(node, context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/debug.py", line 78, in render_node
    return node.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/loader_tags.py", line 123, in render
    return compiled_parent._render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 134, in _render
    return self.nodelist.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 840, in render
    bit = self.render_node(node, context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/debug.py", line 78, in render_node
    return node.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/loader_tags.py", line 62, in render
    result = block.nodelist.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 840, in render
    bit = self.render_node(node, context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/debug.py", line 78, in render_node
    return node.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/defaulttags.py", line 305, in render
    return nodelist.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 840, in render
    bit = self.render_node(node, context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/debug.py", line 78, in render_node
    return node.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/defaulttags.py", line 506, in render
    output = self.nodelist.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 840, in render
    bit = self.render_node(node, context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/debug.py", line 78, in render_node
    return node.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/loader_tags.py", line 155, in render
    return self.render_template(self.template, context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/loader_tags.py", line 137, in render_template
    output = template.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 140, in render
    return self._render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 134, in _render
    return self.nodelist.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 840, in render
    bit = self.render_node(node, context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/debug.py", line 78, in render_node
    return node.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/defaulttags.py", line 196, in render
    nodelist.append(node.render(context))
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/loader_tags.py", line 155, in render
    return self.render_template(self.template, context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/loader_tags.py", line 137, in render_template
    output = template.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 140, in render
    return self._render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 134, in _render
    return self.nodelist.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 840, in render
    bit = self.render_node(node, context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/debug.py", line 78, in render_node
    return node.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/defaulttags.py", line 305, in render
    return nodelist.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/base.py", line 840, in render
    bit = self.render_node(node, context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/debug.py", line 78, in render_node
    return node.render(context)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/template/debug.py", line 91, in render
    output = force_text(output)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/utils/encoding.py", line 100, in force_text
    s = s.__unicode__()
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/forms/forms.py", line 425, in __str__
    return self.as_widget()
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/django/forms/forms.py", line 475, in as_widget
    return widget.render(name, self.value(), attrs=attrs)
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/horizon/forms/fields.py", line 171, in render
    add_item_url = self.get_add_item_url()
  File "/home/murano/murano/murano-dashboard/.tox/venv/local/lib/python2.7/site-packages/horizon/forms/fields.py", line 178, in get_add_item_url
    return self.add_item_link()
  File "/home/murano/murano/murano-dashboard/muranodashboard/dynamic_ui/fields.py", line 704, in _make_link
    return json.dumps([_reverse(cls) for cls in fqns])
  File "/home/murano/murano/murano-dashboard/muranodashboard/dynamic_ui/fields.py", line 701, in _reverse
    raise KeyError(msg.format(_fqn))
KeyError: "Application with FQN='io.murano.apps.PostgreSql' doesn't exist"

[OSCI Robot (oscirobot)]

RPM package murano-dashboard has been built for project openstack/murano-dashboard
Package version == 2014.2, package release == fuel6.0.mira7.git.974a477.fc58f5b

Changeset: https://review.fuel-infra.org/1086
project: openstack/murano-dashboard
branch: openstack-ci/fuel-6.0/2014.2
author: Ekaterina Chernova
committer: Ekaterina Chernova
subject: Show detailed information about absent package
status: patchset-created

Files placed on repository:
murano-dashboard-2014.2-fuel6.0.mira7.git.974a477.fc58f5b.noarch.rpm

NOTE: Changeset is not merged, created temporary package repository.
RPM repository URL: http://osci-obs.vm.mirantis.net:82/centos-fuel-6.0-stable-1086/centos

[OSCI Robot (oscirobot)]

DEB package murano-dashboard has been built for project openstack/murano-dashboard
Package version == 2014.2, package release == fuel6.0~mira7+git.974a477.fc58f5b

Changeset: https://review.fuel-infra.org/1086
project: openstack/murano-dashboard
branch: openstack-ci/fuel-6.0/2014.2
author: Ekaterina Chernova
committer: Ekaterina Chernova
subject: Show detailed information about absent package
status: patchset-created

Files placed on repository:
murano-dashboard_2014.2-fuel6.0~mira7+git.974a477.fc58f5b_all.deb

NOTE: Changeset is not merged, created temporary package repository.
DEB repository URL: http://osci-obs.vm.mirantis.net:82/ubuntu-fuel-6.0-stable-1086/ubuntu