Ignore .DS_Store files
Bump chosen to 0.9.11
Bump Dropbox-PHP to version 1.0.0
Fixes in Dropbox API, try to catch Dropbox exceptions, implement rename and copy in Dropbox storage backend
add font awesome without less and sass files
Merge branch 'master' into composer-and-submodules

Conflicts:
	.gitignore
	symfony/routing/Symfony/Component/Routing
Backport of Doctrine Sqlite ALTER TABLE workaround
Backport of url decoding only once in UrlMatcher