Merge branch 'nalanda' into nalanda-rct2
Don't slice the user id if there is no user id, just to be safe.
Fix test detail exam reports
Merge branch 'nalanda-rct2' of github.com:learningequality/ka-lite into nalanda-rct2

Conflicts:
	kalite/coachreports/views.py
More helpful stat display on test view page.
Get the username from the #logged_in_name directly, to test login status.
Updates for to fix for tests
Merge pull request #2232 from dylanjbarth/nalanda-rct2

Fix bugs in exam reporting
Merge branch 'nalanda-rct2' into nalanda
add new exam playlist tweaks
fix some test repeats
deduplicate exercise IDs
Show entity kind next to playlist entry.
Merge pull request #2245 from learningequality/nalanda-rct2

Nalanda rct2 updates