bug/disconnect-github-5166

[androolloyd]

Description

Account Settings
- disconnect Github action updated
- now logs out and directs the user to the Github OAuth app settings page for the user to revoke the connection

Refers/Fixes

closes #5166

Testing

The user has to manually revoke the permissions granted to the Gitcoin oAuth application from inside the Github settings page, testing does not apply.

[codecov]

Codecov Report

Merging #5178 into master will increase coverage by <.01%.
The diff coverage is 25%.

@@            Coverage Diff             @@
##           master    #5178      +/-   ##
==========================================
+ Coverage   30.71%   30.71%   +<.01%     
==========================================
  Files         221      221              
  Lines       17868    17870       +2     
  Branches     2469     2469              
==========================================
+ Hits         5488     5489       +1     
+ Misses      12154    12152       -2     
- Partials      226      229       +3

Impacted Files	Coverage Δ
app/marketing/views.py	11.88% <25%> (+0.19%)	⬆️
app/dashboard/views.py	14.19% <0%> (ø)	⬆️
...rketing/management/commands/no_applicants_email.py	0% <0%> (ø)	⬆️

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