Rebuild BoundaryElement ranges when the mesh changes.  closes #3894
FiniteStrainMultiPlasticity refactored and it looks much nicer in parts now.

However, it's still huge, so this addresses #3879 but does not fix it entirely yet

Also, changed no_trap_fpe to no-trap-fpe in the test suite.  That possibly fixes #3882.
Added option to convert J-integral to stress intensity factor K refs #3890
Merge pull request #3895 from friedmud/boundary_elem_range_3894

Rebuild BoundaryElement ranges when the mesh changes
Merge pull request #3896 from WilkAndy/multi_refactor_3879

FiniteStrainMultiPlasticity refactored and it looks much nicer in parts ...
Merge pull request #3891 from backmari/print_j_as_k

Added option to convert J-integral to stress intensity factor K