Made language.h more flexible. Automatically do the right defines based on MOTHERBOARD == 7 ? "Ultimaker" : "Mendel"
Suggestion to improve (TODO), no actual code changed
Made a more granular configuration possible PREVENT_LENGTHY_EXTRUDE. You can now decide to allow/disallow large length of extrusions to be executed.

Turning off the protection might be beneficial to those who want to do fast and long reversals.
Merge pull request #1 from ErikDeBruijn/Marlin_v1_Ultimaker-rc3

Marlin v1 ultimaker rc3
Fixed #if for Ultimaker.
Update Marlin/Configuration.h
Update Marlin/thermistortables.h
Update Marlin/Configuration.h
Grammar correction.
Merge branch 'Marlin_v1' of https://github.com/ErikZalm/Marlin into Marlin_v1
Add M401 - Wait for user on LCD button press
Do not initialize in the header file.
Update after testing
Last M401 update, refresh the LCD during an M401 wait.
Add strigification for extruder amount in M115 report.
Extended range above 250C. (Operating range states up to 300C)
Tested May 19 - It works! Verified with separate thermocouple TM-902C also.
Update Marlin/Configuration.h
Update Marlin/thermistortables.h
Update Marlin/thermistortables.h