Debugging Login.
using boost::diagnostic_information
Merge branch 'demo' into next

Conflicts:
	include/maidsafe/session_handler.h
	src/maidsafe/tests/session_handler_test.cc
updated inline with passport changes.
Style fixes
updated to take maid and anmaid as pair.
cleanup
Removed MAIDSAFE_DELETE macro.
Updated AnonymousSession constructor to take MaidAndSigner as parameter
Updated save session
Merge branch 'next' into integrate_network_drive

Conflicts:
	src/maidsafe/anonymous_session.cc
pass encrypted_maid instead of serialised passport