Merge pull request #135 from anitagraser/master

minor fix of text formatting
little more verbose release road map
updated figures from danilo
Added donors
addition of atom feeds in frontpage
addition of links to api en iface api on docs index page
po files updates
Merge branch 'master' of github.com:qgis/QGIS-Website
translation updates
fontsize fix
Merge branch 'master' of github.com:qgis/QGIS-Website
adding missing linking
Aadded donors
cosmetic changes in latest news