branch starts new plot engine for spherical plots
work on new spherical plot engine
work on
* text and label are working now
* generic vector3d/plot to choose between different plotting routines
added rgb plot vector3d/surf
works with ebsdColorbar
multiplot2 becomes now the default
removed S2Grid/plot maybe we introduce it later again
replaced multiplot2 by multiplot
fixes
forgotten
bug fixes
adjust caxis according to colorrange
added featurs:

* log plot
* colorrange
* colorbar
now new plotengine is almost feature complete
labels are still a bit missing
merged mtex-3.3
minor fixes