[ActionView] Rename some function names

Because they are duplicated with functions in utils.js

TODO: Unify duplicated code
[ActionsView] Return "ANY" labels from label builder functions

It makes caller simple.
[ActionsView] Make nameless labels for resources of an unknown server

The label "ANY" is incorrect for them.
[ActionsView] Check existence of serverId on returning "ANY" label from get*NameFromAction()
[ActionsView][Utils] Unify functions to get server/host/hostgroup/trigger labels

Server ID in unknown hosts & hostgroups are removed.
Because users can recognize it from other columns in the same row.
[client][utils] Add tests for functions to get resource names

And fix a typo in getHostgroupName() which is detected by the test.
Merge pull request #308 from project-hatohol/unify-unknown-resource-names

Unify getting resource names.

Thank you for the job. I merge it.