tidy display of config
utilities for accessing entities behind subnets
more fixes for bug where app parented by app reports itself as the master
(specifically where added using new style syntax, after creation)
more logging
completion of CIDR computation, and bit manipulation library
Merge remote-tracking branch 'central/master' into fix/subnets-and-config

Conflicts:
	software/database/src/main/java/brooklyn/entity/database/mysql/MySqlSshDriver.groovy
            (minor blank string check, in local branch, already applied in master (moved to java))
addressed code review comments
fixes to code review comments
Merge pull request #559 from ahgittin/fix/subnets-and-config

fix/subnets and config