fixes issue #2718
fixed an issue when hovering over a menu subchild removing the hover state
fixes #2675
Use Cache backend session only for tests
added double click maximize event to modal window title
jslint fix
hide error when element is disabled
Add warning for plugin-renaming in the shell
Merge pull request #2721 from FinalAngel/develop

minor improvements
test cleanup
Merge pull request #2733 from yakky/feature/plugin_renaming_warning

Add warning for plugin-renaming in the shell
Merge pull request #2724 from yakky/feature/session_cache_tests

Use Cache backend session only for tests
fix no i18n
Merge pull request #2720 from digi604/fix-2675

fixes #2675 (toolbar language must be in LANGUAGES)
Merge branch 'develop' into fix-2514

Conflicts:
	cms/tests/toolbar.py