Wrong started_at in /users/id/watching API

[martinr92]

The api /users/id/watching returns sometimes the wrong started_at timestamp.

This is an example how to reproduce the issue:

• The User checks in to an Episode of a TV show (e.g. s01e01) at 9:00
• The API returns (correctly) started at 9:00 and expires at 9:45 and the content of episode s01e01
• Then the user doesn't watch the credits of the episode and directly starts the next episode at 9:43 (s01e02)
• The API returns now still started at 9:00 (expected is 9:43) and expires at 10:28 and the content of episode s01e02

This results in an inconsistent state: the app assumes now that this episode s01e02 was started at 9:00 (instead of 9:43).

Hope you can reproduce and fix the issue.