fix discussion description revision, raise visibility
Merge pull request #1446 from loomio/link-discussion-descr-changes

raise visibility of revision history in activity feed
fix css
t push origin master
:Merge branch 'master' of github.com:loomio/loomio
break up stylesheets
Merge branch 'master' of github.com:loomio/loomio into membership-request-extension