** Removed deprecated regiter widget
** Added specialized content tools top widget space set for settings /
users view
** Added findSchoolDataSourceByIdentifier method into
SchoolDataController
** Added initial view for user adding functionality
** Added jackson dependency into rest -project
** Deprecated old user REST service
** Added place holder for new replacement service: users
** Added initial version of hsqldb-plugin (Provides a in-memory database
that can be used for testing purposes)
** Added initial version of school-data-mock -plugin (plugin that
simulates a school data bride, can be used for testing purposes)
** Started modeling user school data bridge
** Added commons-io into bom
** Replaced school data bridge entity User with new one
** Removed MockedUserSchoolDataBridge inject from
SchoolDataMockPluginDescriptor
** Added mocked User operations to school-data-mock plugin
** Implemented UserEmail functions in school data mock -plugin
** Added setters for mutable school data entity properties
** Added setter for address in MockedUserEmail
** Added UserImage operations into school-data-mock plugin
** Changes into UserSchoolDataBridge 
  - Changed removeUser(user) -> removeUser(identifier) 
  - Replaced listUserPropertiesByKey by listUserPropertiesByUser
  - Added findUserPropertyByUserAndKey
** Added UserProperty functions into school-data-mock plugin
** Changed nullable settings on table creation script in
school-data-mock -plugin