Bugfix for Release builds of NetworkViewer.
relaxing the closest group when chose pmid_node in DataManager, as storing pmid_node's public_pmid may push one DM out of closest group by one (pmid_node is not allowed to be its public_pmid's DM) [#62699850]
Updated to match changed CMake functions.
Merge branch 'next' of github.com:maidsafe/MaidSafe-Routing into next
Merge branch 'next' into acked_next

Conflicts:
	CMakeLists.txt
	src/maidsafe/routing/matrix_change.cc