ModelFactory added. Fixed a potential seg fault in InputParser when no model name is given. Original implementation would crash without warning in this case. In the current implementation runtime error is thrown for both incorrect and missing model name in model configuration file.
minor typo fixed in documentation
ComputeObservables now uses the ModelFactory in the Input Parser. SetFlag is now case insensitive.
Commit after resolution of conflicts and merge
InputParser modified for NPHiggsST ->NPHiggs and SUSYMI -> SUSYMassInsertion

Merge origin/master

Conflicts:
	EventGeneration/src/ComputeObservables.cpp
	InputParser/src/InputParser.cpp
InputParser modified for NPHiggsST ->NPHiggs and SUSYMI -> SUSYMassInsertion