[4690] Added timelime function.

https://gist.github.com/8r2y5/5ea9023278e17c25e0c6 - pylint
https://bugzilla.stxnext.pl/show_bug.cgi?id=4690
You don't have to use again ```from presence_analyzer.utils```.
Maybe from presence_analyzer.utils import jsonify, get_data, mean, group_by_weekday, seconds_since_midnight?