Merge pull request #21 from ngodfraind/master

Adding missing use.
Using simple quotes to escap background image banner if it contains space
When modifying post if user are not admin on the blog then its post is unpublish for validation
Display message when modification of a post will need a validation from the admin before being published close #22.
Fix bug with post shortener
Output css file to dedicated folder (outside bundle sources)
Merge pull request #23 from stefk/assetic-output

Output css file to dedicated folder (outside bundle sources)
Added tag cloud option and comment edit
Correct tag displaying when no tag
Don't load javascript banner file when not needed
Fix filtering by date
Fix rss generation
Fix pagination url parameters on search list
Merge pull request #24 from iCAPLyon1/bug-fix

Bug fix
Add flag for doctrineORMAdapter to optimize pagination request + optimize number of request on post page by adding join
Use of intermediate variables to avoid runtime notice in dev mode on dev server
Remove join to make pagination work
Adapting icon css to new version of font-awesome
Increase of base version for core bundle for blogBundle to work
Adjust missing class for icon