[FIX] Fix preallocation bug for lsqrdivide

The size of the preallocated x was totally wrong, instead of x = zeros(size(b)) it should have been x = zeros(size(A,2), size(b,2))
[FIX] Reinstated applyMultiply to its rightful place
Merge branch 'Thomas'
assertion for finest==0 and small m and n resulting in nbscales<2
just typo
simple counter test
set sweepflag in opMask to false (can't handle sweep); other operators may also need to be checked again
[ADD] Added test for opMask