fix dbal export
Merge branch '2.2' of github.com:Kunstmaan/KunstmaanAdminListBundle into 2.2

* '2.2' of github.com:Kunstmaan/KunstmaanAdminListBundle:
  exportwithfiltersandsortparams
  export all entries that matches the current filtering, not only the 10 visible on the adminlist page
  "sensio/framework-extra-bundle": "2.2.*"
  Fix symfony requirement
  Start of going to Symfony 2.2
  Update Changelog.md
  use glyph icons for listactions & itemactions
  Fixed some typos and duplicate text
  all in one document + Controller doc update
  more doc tweaks
  Typo fixes, text tweaks and Filters doc
  Create an AdminList Configuration
  minor docs for Controller
  Added some generator information