Add indication about markdown formatting in the publisher
Add expand the publisher test
Merge pull request #4589 from Flaburgan/add-markdown-indication-publisher

[Ready to review] Add indication about markdown formatting in the publisher
fix #2645
  * refactor a bit #weekly_user_stats
  * pass 0 instead of "" to i18n
  * use the first week if none is provided
Merge pull request #4625 from diaspora/fix_2645

fix #2645
Refactor conversations css + fix inconsistent height of conversations list bug
port conversations view to bootstrap