Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

* Move special characters to language.h
* Apply some naming standards
* Clean up menu item draw functions
* Rename some Temperature methods
* UI => ExtUI

- Add methods to access print counter data
- Clean up some inconsistent method names
- Clear lcd status after filament change
- Implement `lcd_reset_status` so it works like UltraLCD

Fix #9948

Fix #9155

Following up on #3231

Note that newer versions of the IDE can still
be made to support compilation for the older boards.

- Apply standards to cardreader.*
- Fix minor issues with cardreader.cpp
- Apply standards to some other stale regions

If only an LCD is defined and no menu or keyboard defined, there is a
compilation error.

Added conditional compilation.

Included support for BT dongle on AT90USB boards.
Added LCD Shift Register LCD control
Included support for RepRap Clone Wars project board (SAV MKI).