Replace names in comment and description

After commit I55d9ff04cf34b62be4b9783a09182b08ca38acd3
Package Definitions is renamed to Packages.

After commit I49999d702f403d946084c5c4312d367404127b47
Application Catalog is renamed to Catalog

Change-Id: I7c0fa0071740a38323fecfdfdec8c13468974bfd

muranodashboard/api/packages.py

@@ -86,7 +86,7 @@ def make_loader_cls():
 # Here are cached some data calls to api; note that not every package attribute
 # getter should be cached - only immutable ones could be safely cached. E.g.,
 # it would be a mistake to cache Application Name because it is mutable and can
-# be changed in Manage -> Package Definitions while cache is immutable (i.e. it
+# be changed in Manage -> Packages while cache is immutable (i.e. it
 # its contents are obtained from the api only the first time).
 @cache.with_cache('ui', 'ui.yaml')
 def get_app_ui(request, app_id):

muranodashboard/catalog/forms.py

@@ -22,7 +22,7 @@ class WorkflowManagementForm(object):
             {'name': 'stay_at_the_catalog',
              'initial': False,
              'description': 'If checked, you will be returned to the '
-                            'Application Catalog page. If not - to the '
+                            'Catalog page. If not - to the '
                             'Environment page, where you can deploy'
                             ' the application.',
              'required': False,