Add permission-based navbar items

[mircearoata]

trafficstars

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 65.21739% with 8 lines in your changes missing coverage. Please review.

Project coverage is 47.75%. Comparing base (fd7fb05) to head (1f72dc0). Report is 75 commits behind head on master.

Files with missing lines	Patch %	Lines
judge/template_context.py	0.00%	6 Missing :warning:
judge/models/interface.py	66.66%	2 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2416      +/-   ##
==========================================
+ Coverage   46.76%   47.75%   +0.99%     
==========================================
  Files         251      261      +10     
  Lines       13317    13763     +446     
==========================================
+ Hits         6228     6573     +345     
- Misses       7089     7190     +101     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

:rocket: New features to boost your workflow:

• :snowflake: Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• :package: JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.