81 - average daily fetch count
Closes (partially) #81
What does this MR do?
Calculates the average fetches per day and puts it on the statistics page. Calculation based on number of all fetches and first fetch day. Tested on local database and calculated correct number for that.
How confident are you it won't break things if deployed?
Links to related issues
- 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))