Fixes listing of other groups on individual group page on control panel.
Reinstates draggable selection on control panel.
Plays nicely with checkboxes.
Comment out hidden divs to fix alignment issue on tabular report for firefox
Fixes pct_mastery for groups to show %, not fraction.
Merge branch 'release-0.12.0' of github.com:learningequality/ka-lite into release-0.12.0
Merge branch 'release-0.12.0' into control_panel_fixes
Fixes button disabled toggling.
Prevents 'Ungrouped' from being selected in group control interface.
Fixes bug that hid coaches if no groups in facility.
Merge pull request #2162 from dylanjbarth/align_tables

Align tables in firefox
Merge pull request #2161 from rtibbles/control_panel_fixes

Control panel fixes