Issue #104: redirects for logins should remember GET arguments (conservancy/kallithea)

[Thomas De Schampheleire]

New issue 104: redirects for logins should remember GET arguments
https://bitbucket.org/conservancy/kallithea/issue/104/redirects-for-logins-should-remember-get

Thomas De Schampheleire:

Scenario:
- logout
- go to changelog of a repository
- select a particular revision and click 'create a pull request from this revision'
- you will get a login screen
- after login, you get to the 'create pull request' page, but the revision selection is gone (the tip is used).

A similar problem is possibly present in other places.