In LessphpFilter, allow formatter and CSS comments options to be changed.

Depends on https://github.com/kriswallsmith/assetic/pull/340/files
Resolve values before looking at them

At least for use_controller the default value defined in Symfony\Bundle\AsseticBundle\DependencyInjection\Configuration is "%kernel.debug%", which you will get literally as a string if you don't call resolveValue().
Adding no_line_comments parameter.
Merge remote-tracking branch 'prodigitalson/master'
fixed whitespace
Fix uglifyjs2 service id
Merge pull request #156 from beavis/master

Fix uglifyjs2 service id
Update Tests/DependencyInjection/AsseticExtensionTest.php
Create dart.xml
Merge pull request #161 from pierredup/master

Added service for dart filter
Adding stacksize option for yui_css

As yuicompressor sometimes have stack size problems while compressing
complicated CSS files, here I set a new stacksize option.
added stacksize to yui_js, changed default
Merge remote-tracking branch 'mpdude/patch-1'
cleaned up last commit
Add classes to cache
Remove unneeded items
added license file
Merge remote-tracking branch 'amyboyd/master'
fixed lessphp defaults
configured setTimeout calls