[REFACTOR] refactor userDatastore - add engine client
[REFACTOR] refactor search, add itemConverter
[REFACTOR] add test for userEngineClient
[REFACTOR] remove unsused constants
add attribute ENABLED to user
remove attribute STATE - replaced by ENABLED
remove attribute STATE - replaced by ENABLED
add enabled to converters
enable user on creation
delete abstractUserListing
add tables and filters to UserListingPage
add icons to fitlers
fix design for users table
Merge branch 'CoreProduct' into WEB-2656
change deactivated filters icon
change wording
Merge branch CoreProduct in branch WEB-2656
add icons for user filters
don't display deactivated users in role users list
add ability to autocomplete fields to be filtered