[AL] Use local matrix/vector types from assembler.
md Correct getMaterialProperty constness.
Add assemble() and addToGlobal() to local asm data.
[AL] Use assemble() and addToGlobal() in VectorMatrixAssembler.
[AL] Remove local assembler arguments (template and ctor).
Remove LocalGWAssembler.
[AL] Rename ITEM_DATA to LocalAssembler.
Rename LocalAssemblerData to LocalAssemblerBase.