Manage neither heater no heatsink cooling fan when not managing an extruder; previously only the heater was not managed when not managing an extruder
changed absolute path to relative path for doxygen
removed and ignored some backup files
No longer need this space savings; allow a Rep 2 build to run with 2 extruders
German language added, but not final now.
language corrections
For Core XY bots, interpret command to home X and Y in parallel as a request to home them sequentially.  Timeout value is used for each axis.  Thus total timeout is twice that specified.  However, if the first axis times out, then the entire operation is cancelled.  Order is home X, then home Y.
Fix bitmasks
Compile in RGB LED driver support for all FlashForge bots
Fix up some header guards
German translation
German translation
some strings where to long in german translation.
#include <math.h> removed from Command.cc
Display of filament so far in print stats for a running print did not display correctly on a Rep 2 or 2X: their LCD display does not wrap the text to the next line.  So, things appeared fine on a Rep 1 which does wrapt the line, but not on a 2/2X which did not.  Added the 'move to next line' command which should have been present.
Merge pull request #111 from GottfriedSp/master

German translation
Merge remote-tracking branch 'upstream/master' into alt_uart

Conflicts:
	firmware/src/MightyBoard/Motherboard/Motherboard.cc, merged manually.

Other anti-formatting efforts