[2.0] Fix up REPRAPWORLD_KEYPAD defines

[2.0] Move test extrusion options under G26

[2.0] Support for Extrudrboard in Printrboard Rev.F

[2.0] Update Travis CI, fix compiler warnings

As modified in #8395

[2.0] Improve and clarify M428 code

* Fix some 8-bit Teensyduino compile warnings

-Override Teensyduino legacy NOT_A_PIN 127 define
-some fixups for Printrboard_RevF pins

* Proper cleanup of Printrboard Rev.F pins

* Apply LCD fixes to Printrboard v1

[2.0] Remove offsets from soft endstops, tool change

[2.0] Use do_blocking_move_to where possible

[2.0.x] Normalize load/unload length in M600

[2.0.x] PROBE_SELECTED etc.

2.0.x - LPC1768 - update file to new pin numbering system

[2.0.x] Updates to Traditional Chinese

From @cheton at #8347

And...   Keep both branches in synchronization.

[2.0] Add new board from Russia

http://3dtoday.ru/blogs/svs0724/ruramps4d-ramps-for-adruino-due-the-pilot-shipment-available-for-zack/

[2.0.x] Add delta_height variable in lieu of using home_offset

[2.0] Fix PROBE_MANUALLY on kinematic bots

2.0.x - U8G HAL LCD support - Arduino IDE compatibility

changed includes to make Arduino IDE happy