Dotcase: add scrolling caller name to ringing screen

PS1: By xda's David 617
PS2: Cleaned up spaces and removed debugging logging
PS3: Renamed some vars for clarity, moved callerTicker into status
     class
PS4: Added method to normalize characters
PS5: Updated letter sprites to be more readable, only check name once
     per draw
PS6: Minor adjustments
PS7: Add extra space between loop, handle short names properly
PS8: Fix weird ticker (add pauses on loop)
PS9: Pause slightly longer when a call first arrives

Change-Id: I2d038adeb904197217e565fdfc47608b3ecb1dc9