Simple modes, bug fixes, and fine tuning the fill brush

Bugs fixes related to the rotation setting cutting off part of the fill-able canvas.

Also added more fine-tuning controls to the Fillbrush

Additionally, the app now starts out in a “beginner mode” so it’s hopefully less overwhelming to newcomers! No worries though, all the controls are available in “Advanced Mode”!

—Dawnia (Letsglitchit)