[TASK] Add "all" tab to workspace module for regular editors

Change-Id: I399024ac5bbcd0b094a77c5c4d41940373360eaf
[TASK] Modify workspace context scoping on all tab

Change-Id: Ie8bacbb3b464d33e3d5a31885229bbabd79dc5af
[FEATURE] Show workspaces tabs in module using a scrollable TabPanel

Change-Id: I1c9f0e2e7872ef4ca1221bfd4f8f478977f4f584
[TASK] Integrate height handling in workspace toolbar selector

Change-Id: I2247cb606f25268239336e5df5eec8dcbbcaac9d
[BUGFIX] Let workspace users decide whom to send notifications

Change-Id: I39ded2ed02772040d498d5293d24c8bd6fb9ef46
[BUGFIX] Streamline column and language states

Change-Id: Ife08c10eae23625aebc314d40bd0e105ae8171b1
[BUGFIX] Width of action column is wrong

Change-Id: I3e1cbfd9be53c57dad86a6003edbf38b559dab73
[FEATURE] Improve workspace module performance

Change-Id: I81b6d924fd6e63ba7f5137cb65d6e0d3195519b5
[FEATURE] Improve performance on page tree by using cached repository

Change-Id: I02dbef0c7569c4325c28e8591d915c1f93fed238