[BUGFIX] Properly size icons in translation overview

Limit size of extension icons and use styling of app icons.

Resolves: #65114
Releases: master
Change-Id: I95584bb5d9a328560fa97069b94c9aad73602047
Reviewed-on: http://review.typo3.org/36962


Reviewed-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Tested-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Reviewed-by: Michael Oehlhof <typo3@oehlhof.de>
Tested-by: Michael Oehlhof <typo3@oehlhof.de>
Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>