make node_t::branch() work with 1d and 2d
prepare node::getNeighbour() for use in 2d
make node::initialize work in 2d
wip
2d regular graphics: very nice looking bug
fixed bug in boundary conditions of 2d regular grid solver
cleanup gui (remove block-graphics for 1D)
theory plot added to guiRunner
prepare 2d plots in guiRunner
make node_t::branch() work with 1d and 2d
enable multires in guiRunner