Clear weakform library for testing.
Disable the meshes quality test in union mesh creation (for filters of multiple mesh solutions) as in Agros some meshes are very bad.
Fix a test example.
Fix allocations in weakform library.
Forms cloning updated.
Fix create_ref_space for L2MarkerWiseConstSpace.
Fix the problem with almost zero solutions and adaptivity.
Add destructor in MumpsMatrix.
Fix mismatched alloc / dealloc in L2 proj based selector.
Decrease HermesEpsilon so that Bracket in Agros adapts.
Fix the MUMPS deallocation.