[Tokens] Token support in HTTP resources.
[Tokens] Added token support to the Job class.
[Tokens] Client API support.
[Tokens] CLI support.
[Tokens] Fail requests if token doesn't match
[Tokens] Made tokens optional in MasterModel class plus misc fixes
[Tokens] De-wildcardize imports and stuff.
[Tokens] Added TokenTest
Remove unnecessary throws in JobsResource
[Tokens] Specifying token during operation on job which has no token set is no longer allowed.

Previously, if you specified a token while doing an operation on a job
where a token was not set, it would work. We no longer allow that.
Merge pull request #327 from spotify/kobolog/tokens

Tokens