Updated grunner.conf

Signed-off-by: David Jander <djander@gmail.com>
clean_extruder.sh: added command-line options for more modes

Short mode and no-xyz-movements mode.
Also adjusted extruder speed.

Signed-off-by: David Jander <djander@gmail.com>
move.py: Fix bug in calculating transformed feedrate

Signed-off-by: David Jander <djander@gmail.com>
clean_extruder: fixed getopts args

Signed-off-by: David Jander <djander@gmail.com>
grunner.py: Implemented support for heated bed

Signed-off-by: David Jander <djander@gmail.com>