Add OSM attribution line to main map
Closes #661 (closed)
What does this MR do?
Show the attribution Line on the bottom of the map. (It was hidden before, because the maps height was set too big) I also included a small test in order to prevent this bug from ocouring again.
How confident are you it won't break things if deployed?
I would be really surprised if it breaks a lot.
- added a test, or explain why one is not needed/possible...
- no unrelated changes
- asked someone for a code review
- joined #foodsharing-beta channel at https://slackin.yunity.org
- added an entry to CHANGELOG.md (description, merge request link, username(s))