Extra iFC parsing for information needed in third-party registration
Factor out deregistration code
Code review feedback
Merge branch 'dev' into 3p_reg_asInvocation

Conflicts:
	include/ifchandler.h
	sprout/ifchandler.cpp
	sprout/stateful_proxy.cpp
	sprout/ut/ifchandler_test.cpp
Correcting names
Revert "Correcting names"

This reverts commit dc7abca7aea10885882ec2a067378626ba2c815e.
Revert "Factor out deregistration code"

This reverts commit cf1f8bbdf1ada6cb7167cb7e635d7998a5a196fd.
Merge pull request #13 from Metaswitch/3p_reg_asInvocation

3p reg - addition of AsInvocation class and parsing