Include theme data

The css and image files for the debwiki theme were in another repository on http://git.deb.at/w/deb/moinmoin.git. There is no reason not to include the files in the wiki.debian.org repository on salsa and having everythin in one place makes contributions easier.

added 12 commits

• 553498fd...918243d0 - 11 commits from branch debian:master
• 85c84a8a - Include theme data

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@93sam @birger is this still relevant / can it be merged / closed?

(trying to reduce open debian-namespace MRs here)

closed