Redesigned Dashboard & Workflow - Internal/External review indications (OMP)

[jardakotesovec]

• differentiate internal/external review stage on the dashboard
• show the editorial activity for internal review stage
• differentiate internal/external stage correctly on the workflow page
• add colouring to the internal stage in menu on workflow page

To test

• In OJS we reference to external review stage just as 'Review stage'. But in OMP there is need to differentiate therefore the labeling should be Internal Review and External Review.
• API is sending review rounds and review assignments in one array. Therefore its important test that the UI layer is picking up correct review rounds and review assignments for given internal/external review.
• Test that the files are correctly separated for internal/external review - best to test against 3.4
• Test that the discussions are correctly separated between internal/external.