js: refactor and simplify @mentions handling - no functional changes The autocompleteCreate and get_mention functions are inlined. The mentionQuery and tuple in datasource are replaced with before/search/after data attributes on the $container element. Variable use is simplified - less variables, better naming, and better content. The @ is now in the before string, not in the search string.

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

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__$