Replace flourish fDate with Carbon time
What does this MR do?
Replaced alle usages of fDate with Carbon time. Can't delete flourish completely since it's libs are used for images and other stuff.
How confident are you it won't break things if deployed?
Quite confident. Get's tested by a unit test.
- 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))