TMDM-7806:Remove "${user_context}" drop-down item for Community Edition.
TMDM-7806: use IExAdapter structure to refactor the code.
Merge branch 'maintenance/5.6' of https://github.com/Talend/tmdm-studio-se into maintenance/5.6
TMDM-7800: fix NPE when logon project, which lead to delete datamodel/datacontainer with parent folder can not be restored.
TMDM-7721: Fixed the following
1. Fixed the cell editor loses focus when xpath dialog is active in Mac system
2. Fixed the cell editor can't lose focus when user click area outside tableviewer
Merge branch 'maintenance/5.6'