Change working hours for the History Graph

[DigiBear]

Due to my current schedule, I often work past 00.00, pushing Pomodoro sessions onto the next day. This makes it a bit mind-boggling to retroactively figure out how much I worked on a given day since I'm not sure where the sessions of the previous day end, and the new ones begin.

[ivanji]

Came to report exactly the same thing. It provides unreliable history.