Refactor degree sign and date formating
Refactor version-dependant implementation in CurveTrackingPicker
Add white background to CurveTrackingPicker label

Fixes #5
Add graph title

See #4
Better silo button styling

See #4
Make mutex for each DB independent
Fix bug where mouse grapping fail after graph reload
Clear title on graph clearance
Cleanup licensing info
Modify project structure for 3rdparty libs
Add progress layer on week data fetch