Time stamps seem to use 12-hour values with no am/pm

[RodionGork]

It looks like timestamps (for example on user profile page - task solution time) are wrong in that they use 12-hour format without showing am/pm.

I think simply format should be fixed here:
https://github.com/CodeAbbey/abbey2/blob/master/py/utils/time.py#L6
just need to read relevant python documentation

[RodionGork]

Closed while recording demo-video