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 branch 'minified_js' of https://github.com/mprins/dokuwiki-socialshareprivacy into mprins-minified_js

Conflicts:
	action.php