pep8
update alembic (0.6.4 -> 0.6.5)

This fixes a bug in --autogenerate, which is relevant for us.
fix category template titles
fix static template titles
i18n: fix
open formatting links in new tab
Merge pull request #912 from xi/feature-formatting-in-new-tab

open formatting links in new tab
Allow advisors and higher to delete own comments by default
Fix abuse message function
Fix non-instance user select form
allow to add html in category long_description
restrict iframe width
Merge pull request #913 from xi/feature-embeds-in-category

embeds in category
Better flash messages after sending of activation links - with spam hint
Merge pull request #914 from xi/feature-spam-spam-spam-spam-eggs-and-spam

Better flash messages after sending of activation links - with spam hint
i18n: extract messages
Fixup 7e73f11f9bc5c22dc8c18f9b351eb70f06a95e44
i18n: extract messages
i18n: update
pep8