Bildunterschrift license commas

[lucyWMDE]

There is a problem with the way the License and Namensnennung for images is presented that I can't figure out how to fix. See examples on this page - applies to Abschnitt textblock links/rechts, gallery, and likely all image pargraphs.

• There is a weird extra comma before the name, with or without a line-break in between. This should be removed. I guess it's safe to assume the editors will use a full-stop at the end of the caption.
• We need a space between the comma after the name and the license code. eg "Stephan Bartholmei, CC-BY-4.0" rather than "Stephan Bartholmei,CC-BY-4.0"

[Snater]

I just checked on test deployment. Seems to be alright now. :)