comments: display comment previews while submitting Instead of just saying 'Submitting' and not showing any progress to the user until the comment has been accepted by the server, show a preview of the comment above the comment box in a way which is makes it obvious to the user the comment is being submitted. Apart from that, also clear the comment box so that a repeated clicking the submit button doesn't result in a duplicate comment. The preview doesn't highlight URLs or support @mentions or *bold*, which is a good enough approximation in this case. When/if we (re-)add the rST/Markdown support, we will need a client-side parser for the syntax we choose. When the submission fails, display a message and offer the user to retry or cancel the submission.

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__$