autocomplete: use select2 when selecting users to add as reviewers to PRs This is a minimal change to PullRequestAutoComplete, inspired by Dominik Ruf. The UX is slightly different than before, with select2 putting up an extra input field, already before typing anything. We use minimumInputLength 1 to get the same behaviour as before and avoid displaying all users in a list. The select2 widget is reused for adding more users, so when a user is selected, we process it, close the widget, and abort the selection, waiting for the user to enter another user name.

syntax: glob
*.pyc
*.swp
*.sqlite
*.tox
*.egg-info
*.egg
*.mo
.eggs/
tarballcache/

syntax: regexp
^rcextensions
^build
^dist/
^docs/build/
^docs/_build/
^data$
^sql_dumps/
^\.settings$
^\.project$
^\.pydevproject$
^\.coverage$
^kallithea\.db$
^test\.db$
^Kallithea\.egg-info$
^my\.ini$
^fabfile.py
^\.idea$
^\.cache$
/__pycache__$