[configdb] need to limit queries for resource definitions to current environment

[Yuriy Taraday]

Otherwise user can get error like this: http://pastebin.com/Nr9zTwCW

If there are several components with resources with same names:

In [123]: with app.app_context(): astute_res = db.ResourceDefinition.query.filter_by(name='astute').all()
​
In [124]: astute_res
Out[124]:
[ResourceDefinition(id=13,name=u'astute',component=Component(id=1,name=u'fuel9.0'),content=None),
 ResourceDefinition(id=27,name=u'astute',component=Component(id=2,name=u'fuel8.0'),content=None),
 ResourceDefinition(id=41,name=u'astute',component=Component(id=3,name=u'fuel7.0'),content=None)]

Places to fix are marked with "TODO" in app.py.

[Alexander Kislitsky (akislitsky)]

Not actual after performance optimisations and logic refactoring in the tuning-box.