Trying to convert FEM to FLENS only

Nearly there, just need to fix the linking :(
Readd input data
Readd input files
Still not linking the templates
cleanup before merge
Merge remote-tracking branch 'mazen/master'
nothing important
Add gitignore
Completed cg solver linking with fully flens fem.cpp

Need to link gs, but the headers have gone astray.
Finished adding flens to FEM.cpp

Parallel works, serial possibly not.
Merge branch 'FEMasFLENS'
Merge remote-tracking branch 'mazen/master'

Conflicts:
	examples/main-parallel
	examples/main-serial
mergin w. chri
Merged w. Chris and tested; added wrappers; corrected bc base; getA segmentation fault