Practice tracking & motivational graphs

The app would give me the chance to track me every time I practice music. This could be with or without the metronome. I could set practice goals (3 hours per week) and compare how well I am doing. There are also helpful stats, such as how often I practiced music this month, how many hours, and more.

There are apps for that - Modacity is good.

Merged "Track practice time" #189

Daily, weekly, monthly, practice stats please. Like modacity and Instrumentive.

Merged into "App: graphs to show your practice data" #228