Added first auxin transport protocol: Auxin upstream pumping.

--
user: Michael Guravage <michael.guravage@cwi.nl>
branch 'default'
added data/leaves/myAuxin.xml
added src/protocols/MyAuxinModel/Makefile
added src/protocols/MyAuxinModel/myauxinmodel.cpp
added src/protocols/MyAuxinModel/myauxinmodel.h
added src/protocols/MyAuxinModel/myauxinmodel.pro
changed src/protocols/Makefile