[TASK] Use font-awesome icons in ext:version

removes the colored icons and uses font awesome as well

Resolves: #68437
Releases: master
Change-Id: I0cbd2ae6e76902a0c60ee1241e0047dde315c406
Reviewed-on: http://review.typo3.org/41786


Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>