Continuous Release 1.6.0

[Splines]

• Fix color for comment previews #499
• Fix ghost links in nested tabs #500
• Fix flickering for quiz previews #502
• Refactor user controller and views #505
• Fix: Restore media search behaviour #506
• Restrict editor access #452
• Rubocop: Update rubocop version #494 and Enforce rubocop layout rules #495
• Use default version of commontator gem instead of own fork #509

[codecov]

Codecov Report

Merging #511 (cb46762) into main (f6dd9d2) will decrease coverage by 0.14%.
The diff coverage is 47.31%.

@@            Coverage Diff             @@
##             main     #511      +/-   ##
==========================================
- Coverage   66.64%   66.50%   -0.14%     
==========================================
  Files         311      311              
  Lines        9362     9413      +51     
==========================================
+ Hits         6239     6260      +21     
- Misses       3123     3153      +30     

Impacted Files	Coverage Δ
app/abilities/medium_ability.rb	60.86% <0.00%> (ø)
app/helpers/announcements_helper.rb	36.36% <ø> (ø)
app/helpers/application_helper.rb	38.57% <0.00%> (ø)
app/helpers/assignments_helper.rb	36.36% <ø> (ø)
app/helpers/chapters_helper.rb	66.66% <ø> (ø)
app/helpers/clickers_helper.rb	22.22% <ø> (ø)
app/helpers/courses_helper.rb	43.75% <ø> (ø)
app/helpers/items_helper.rb	45.45% <ø> (ø)
app/helpers/lectures_helper.rb	35.18% <0.00%> (ø)
app/helpers/lessons_helper.rb	42.85% <ø> (ø)
... and 80 more