* Update E-Ink display after sending adhoc ping or disable/enable GPS
* Resume display updates when touch button pressed
* Use touch hold as modifier; change double-click behavior for user button
* Fix preprocessor exclusions
* Purge backlight behavior
* Distinguish between 3x and 4x multi-presses
* Touch button considers "Wake screen on tap or motion" user-setting
* Don't assume device has BUTTON_PIN
* Rename misleading method