A preliminary commit of the topology usage in the statistics subsystem. StatisticsTest is still broken, but fixing that requires more work on the topology itself.
two comments
Outlined the necessary changes to the topology interface. Also removed all exceptions from the interface.
Topology paths can now be registered in one high level call, aliases don't work yet.
topology aliases work now
Topology aliases work now.
Merge branch 'master' of github.com:JulianKunkel/siox

Conflicts:
	src/monitoring/topology/DatabaseTopology.cpp