Refactor abilities

[fosterfarrell9]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Refactorisation

• Please check if the PR fulfills these requirements

• E2E Tests for the changes have been added via Cypress
• Meaningful rspec tests have been added
• Docs have been added / updated

• What is the current behavior? (You can also link to an open issue here)

Authorization is done via ability.rb, which has become wy too big to be properly maintained.

• What is the new behavior (if this is a feature change)?

abilities have been split up and placed in separate files in app/abilities

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

• Other information:

[cypress]

---

Test summary

41 • 6 • 0 • 0 • 3

---

Run details

Project	MaMpf
Status	Failed
Commit	b44871c
Started	Mar 3, 2022 5:31 PM
Ended	Mar 3, 2022 5:44 PM
Duration	13:41 💡
OS	Linux Debian - 10.10
Browser	Electron 89

View run in Cypress Dashboard ➡️

---

Failures

	courses_spec.js		1
1	Courses > simple user > can not subscribe on page to unpublished
	media_spec.js		1
1	Media > Admin > can create medium & release it.
	watchlists_spec.js		4
1	Watchlists > User > can create and add to watchlist in lecture
2	Watchlists > User > can change watchlist
3	Watchlists > User > can view public watchlist of other user
4	Watchlists > User > can not view private watchlist of other user

---

Flakiness

	media_spec.js		2
1	Media > Non-Admin Teacher > can create medium & release it scheduled with submission
2	Media > Editor > can create medium & release it.
	watchlists_spec.js		1
1	Watchlists > User > can drag and drop watchlist_entry

---

This comment has been generated by cypress-bot as a result of this project's GitHub integration settings. You can manage this integration in this project's settings in the Cypress Dashboard

[codecov]

Codecov Report

Merging #342 (b3b101f) into mampf-next (4441eab) will decrease coverage by 0.01%.
The diff coverage is 76.76%.

❗ Current head b3b101f differs from pull request most recent head 394c25a. Consider uploading reports for the commit 394c25a to get more accurate results

@@              Coverage Diff               @@
##           mampf-next     #342      +/-   ##
==============================================
- Coverage       65.98%   65.97%   -0.02%     
==============================================
  Files             301      301              
  Lines            8852     8969     +117     
==============================================
+ Hits             5841     5917      +76     
- Misses           3011     3052      +41     

Impacted Files	Coverage Δ
app/models/lecture.rb	53.24% <0.00%> (+0.85%)	⬆️
app/models/medium.rb	45.65% <20.00%> (+0.47%)	⬆️
app/controllers/media_controller.rb	18.29% <25.00%> (+0.46%)	⬆️
app/controllers/tags_controller.rb	21.07% <25.00%> (-0.16%)	⬇️
app/controllers/chapters_controller.rb	30.76% <40.00%> (-0.49%)	⬇️
app/controllers/courses_controller.rb	34.21% <40.00%> (-0.52%)	⬇️
app/controllers/sections_controller.rb	29.50% <40.00%> (-0.32%)	⬇️
app/controllers/lessons_controller.rb	23.80% <42.85%> (-0.79%)	⬇️
app/controllers/main_controller.rb	42.42% <50.00%> (+0.48%)	⬆️
app/controllers/profile_controller.rb	23.42% <50.00%> (+0.99%)	⬆️
... and 24 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4441eab...394c25a. Read the comment docs.