User Config

[iagodahlem]

Add config page, to allow the user to override:

• Each entry type duration, currently we have pomodoro with 25:00 min, short-break with 5:00 min and long-break with 15:00 min. Also, decide a range where the user can vary for each type, eg: Pomodoro can be changed from 20:00 to 30:00 minutes.

• Session length, the default is a session with 6 entries, so the user will have to cycle 5 times between pomodoro and short-break until it gets into a long-break. The idea is to have radio buttons with each possible value (4, 6 default, 8).

All these settings will be stored locally, for now, the same way as the entries are being saved.