Some I18N strings are not translator friendly

[Akihiro Motoki]

horizon/templates/horizon/common/_usage_summary.html:
blocktrans contains non-simple HTML tags and the range of blocktrans seems natural.

   <form action="?" method="get" id="date_form" class="form-inline">
     <h3>{% trans "Select a period of time to query its usage" %}: </h3>
     <div class="datepicker form-group">
     {% blocktrans with start=form.start end=form.end %}
     <label>From:</label> {{ start }}
     </div>
     <div class="datepicker form-group">
       <label>To:</label>{{ end }}{% endblocktrans %}
     </div>

openstack_dashboard/dashboards/admin/images/templates/images/properties/_edit.html:
The sensence and the value are concatenated in the code and translators cannot control the word order.

  <p>{% trans 'Update the custom property value for' %} &quot;{{ key }}&quot;</p>

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/112647

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/112647
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=1c84b18d192766a26b4375d4f7a2cf152d991e74
Submitter: Jenkins
Branch: master

commit 1c84b18d192766a26b4375d4f7a2cf152d991e74
Author: Akihiro Motoki <email address hidden>
Date: Fri Aug 8 03:18:25 2014 +0900

    Make some new strings translator friendly

    _usage_summary.html:
    blocktrans contains non-simple HTML tags and the range
    of blocktrans seems natural. This commit split blocktrans
    into the start and end part of the period.

    templates/images/properties/_edit.html:
    The sensence and the value are concatenated in the code
    and translators cannot control the word order.

    Change-Id: I3021d67dcb20968b785a8a98ed639a128e3412f2
    Closes-Bug: #1354125