Added Monomer, MonomerPattern, Compartment, and Parameter equality operator and test
is_equivalent_to now includes compartment
Fixed interactive export_name to be compatible with file system naming, now interactive mode can generated equations
Fixed as_complex_pattern bug on dealing with compartments
Patched bug in test due to change to _interactive_
Fixed bug in initial conditions with same monomer in different compartments
Merge remote-tracking branch 'lolab/master'

Conflicts:
	pysb/core.py