fix language selector of facebook button

Based on the language of the wiki choose the correct image for the '''recommend''' button.
use minified version of the js lib

Use the minified version of the Heise jQuery Plug-In socialshareprivacy.

_Note_ the minified version is 1.4 and has modified paths for the images (similar to the non-minified js).
Merge remote-tracking branch 'origin/minified_js'

Conflicts:
	action.php