[server][testHostResourceQueryOption] Rename: TEST_BIND -> TEST_SYNAPSE.
[server][Params] Specify 'Id' clearly to improve readability.

HostGroupSet ->
HostGroupIdSet
[server] Fix the wrong calculation of the number of triggers and hosts when the hostgroup is specfied.
Merge branch 'hostgroup-for-dashboard'
Merge branch 'master' of github.com:project-hatohol/hatohol