Fixed important bug

Constructor for CudaArray (and CollOfScalar) with uniform values were
implemented by creating vector of uniform vals on host and copy to GPU.
We now call a kernel and avoid this copy!
Removed unnecessary initializations
Merge branch 'master' of https://github.com/sintefmath/equelle
Merge remote-tracking branch 'upstream/master'
Schematic overview of the Equelle compiler using tikz
For swe testing wrt grid size
Merge remote-tracking branch 'upstream/master'