utils: added code for sending test emails.

tests: don't show logs by default as they make the failures hard to read.

tests: fixed links to rst manual.

pull-requests: changed the order of close-branch after merge, so we don't leave open heads. Branches will be closed, and then merged based on the close commit. This is a proper and recommended workflow for feature branches and close option.

emails: reduce warning logs on pre-mailer.

pull-requests: don't show new commits info box on closed PRs

pull-requests: make auto generated title for pull requests show also source Ref type .eg. branch feature1, instead of just name of the branch.

branch-permissions: protect from XSS on branch rules forbidden flash message.

users: fixed disabled user message UI.

auth-tokens: expose all roles with explanation to help users understand it better.