CORE-4538: Added externalized empty group background string
update strings
CORE-1848: Added a huge set of WYSIWYG labels and help messages.
CORE-1848: Entered more externalized strings for WYSIWYG
CORE-1848: Added more externalized strings for contextual help
core-4569 add new messages for Tool installation request form
fix build issue...
CORE-1848: Organizing app labels
CORE-1848: More I18N string organization
Merge branch 'master' into STABLE