Added Menu Options to the Main-> Control->Temperature Submenu that allow the user to set new values for the ABS and PLA preheat function. EEPROM updated so that these settings can also be committed to EEPROM memory.
- removed several multiple definitions of same message
- fixed definition of missing messages in german and spanish
- tweaked german translation (a lot)
- added note about changing and testing this file
Fixes error introduced at commit aee475aa55 which caused the sketch not to comile for language option 1. Several defines were removed but still referenced in ultralcd.pde
Added more defines to the language.h file so that nowe most of the text strings are now configured via this file. Still got some hunting down to do to complete this task.
Instead of a single pre-heat, now there is pre-heat ABS and PLA options
Added defines to the configuration file to adjust preheat temperatures for both