some feature page fixes
first draft, half done
complete, pictures TODO
ready to add pictures
finishing touches on speaking page
add pictures to events pages and link to speaking
Fix html indentation, shorten lines, remove unnecessary whitespace
minor fixes all over
Merge pull request #344 from owncloud/speaker

Big update to event pages
Merge pull request #338 from owncloud/features

some feature page fixes
Merge pull request #346 from owncloud/master

Merge in speaker page