Added more test specs to import#upload

Squashed commit of the following:

commit 275f996476ecc24ead19bbc7f45f18456dcdabd9
Author: Thomas Schank <DrTom@schank.ch>
Date:   Tue Mar 18 12:32:50 2014 +0100

    Testing uploaded meta data

commit 8e0265a8f3b9e72ff031b60918115f04d1a23dc4
Author: Thomas Schank <DrTom@schank.ch>
Date:   Tue Mar 18 11:17:31 2014 +0100

    Testing more imported media_file properties
test: fix custom URLs test