leveraged minimum version of symfony to 2.4 (request stack unavailabl…

…e to earlier version of bundle)

compose requirment fix

reversed usage of request object/service

Merge branch 'master' of git://github.com/helios-ag/FMElfinderBundle

merge

revalidated composer.json

hhvm added to travis tests

updated to latest version of elfinder (nightly build)

Merge pull request helios-ag#50 from dbu/document-compression

document new config options, fix ckeditor compressed template

Merge pull request helios-ag#47 from helios-ag/cmf

Uglify support, optional compession

Readme update