Fix broken API links, fixes #4463
Fix Pygments 500 error if lexer not found by name. Use first alias instead. fixes #4473, #4451
navbar tooltip position fix when "loading" appears.
Merge pull request #4508 from Razer6/fix_broken_api_links

Fix broken API links, fixes #4463
Added new entries to changelog. Version up to 5.4.0.pre
Use default system editor.
Cache MR diffs result. Improve diff output
Merge branch 'change-to-default-installer' of /home/git/repositories/gitlab/gitlabhq
Additon of apis for fork administration.

Added ability to add and remove the forked from/to relatioinship
between existing repos.
More info (like 10 branches, 5 tags) at project show page
Better control placement on project page
Extend shortcuts list modal. Mention it at help page
Fix header text for setting greatest team access to a project
Fix User#can_create_project?
Cleaner dashboard sidebar
Merge pull request #4519 from kwongius/team-assignment-text

Fix header text for setting greatest team access to a project
Sanitize user attrs on model level
Sanitize user attrs on model level
Merge branch 'master' of github.com:gitlabhq/gitlabhq
Merge pull request #4515 from amacarthur/fork-admin

Additon of apis for fork administration.