Add tab navigation and aria labels for permissions model

[jatindersingh93]

• Make folder and file permissions keyboard accessible
• Make permission table keyboard and screen able accessible
• Focus back to the button element when model is closed
• Add aria tags for screen reader
• Make content in model screen reader friendly
• Keep focus in the model so outside DOM elements are not available

Description

Types of changes

Checklist

• I have read the CONTRIBUTING doc
• I have checked that unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[github-actions]

Coverage Report (Application)

Totals
Statements:	70.67% ( 53 / 75 )
Methods:	62.5% ( 5 / 8 )
Lines:	81.63% ( 40 / 49 )
Branches:	44.44% ( 8 / 18 )

[github-actions]

Coverage Report (Frontend)

Totals
Statements:	19.22% ( 721 / 3751 )
Methods:	18.77% ( 137 / 730 )
Lines:	23.12% ( 501 / 2167 )
Branches:	9.72% ( 83 / 854 )

[codeclimate]

Code Climate has analyzed commit 04d6c23 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 14.2% (50% is the threshold).

This pull request will bring the total coverage in the repository to 24.4% (0.0% change).

View more on Code Climate.

[TimCsaky]

Great job. good to have this pattern to re-use