Updating reference count of a chunks in MM / related to version handler
Moved condition variable notifications outside of locked scopes.
further work and tests on reference count
Merge branch 'reference_counts' into next
renaming node_group_size to group_size
Fixed Vault Style Error
Key Check Test
Added useful error message in case of trying to build outside of super-project.
Merge branch 'next' into account_transfer

Conflicts:
	src/maidsafe/vault/maid_manager/maid_manager.h