Adds external AREF
Right-align menus
Inclinometer zeroing, rearranges functions
Adds EEPROM to save unit and pitch/roll offsets
Save mode to EEPROM
Revert "Save mode to EEPROM"

This reverts commit 16f7aa9df99b12f5cf6e4ce8ddfcd020c9b46db8.
Push to reset min/max altitude tracking
Merge branch 'refs/heads/save-mode'
Manual overwrite to get changes from save-mode branch
Removed "unsigned" from brightness variables
Save a few more settings to EEPROM