grid settings in preprocessor widget
Merge remote-tracking branch 'mach/master'
Merge remote-tracking branch 'kus/master'
basic trilinos implementation (doesn't work)
ppa:nschloe/numerical
added empty solver (disabled) and matrix and rhs format
number of jacobian recalculations accesible from script
fixed save vtk
Merge remote-tracking branch 'kus/master'
size() == 0 -> isEmpty()
Merge remote-tracking branch 'origin/master' into cmake

Conflicts:
	hermes2d/hermes2d.pro
	hermes_common/src/solvers/aztecoo_solver.cpp
updated cmake (add custom commands - cython, lrelease and xsdcxx)
removed useless files