[2.0.x] Additional Travis BABYSTEPPING tests

[2.0.x] Fix WDTO during long delta moves

Fix #8577

Fan speed code fell into a curly brace

During long lasting moves of a delta machine neither the temperatures are maintained nor buttons checked nor ... .
The fix is to call 'manage_heater()' and 'idle()' every now and then in the loop where the move is segmented. 
The code is abot the same as in G2_G3 wher we had the same problem with too large circles lasting too long.
Fixing #7510

[2.0.x] Make MBL work more like PROBE_MANUALLY

[2.0.x] MKS Sbase - add servo pin definitions and add directly controlled PWM

Change G26 and G29 bit function names to avoid HAL name collision

[2.0.x] Fix for #8525 and other cleanup

[2.0.x] G33 probe error handling

Fix #8561. Fix #8562

[2.0.X] U8Glib follow up

Travis fix - only allow ultralcd_st7920_u8glib_rrd_AVR.cpp to compile when ST7920 selected

Travis is having problems at:  https://github.com/MarlinFirmware/Marlin/pull/8560   

So...   doing a direct commit to get things correct.   Bugfix_v1.1.x does not have this bug.  Nothing needs to be done to that branch.

MK2_MULTIPLEXER does not require E2/E3 stepper pins