Added link to info source
Cleaned dirty comments.
Popped stash from master. (Was working on wrong branch) Now the client
is treating login/logout correctly (as tested). Also fixed a little bug
with the HTTP response (used to be a 404) at the delete-user REST
endpoint.
Updated the old tests (a bit), and fixed a service layer bug.
Demonstrated that aspects work, and created tests for bad input.
Finally, figured out how to let advice run on the server!
Removed dirty comments.
Major changes to the contexts! Database and service layer stuff moved to
the (server) "root" context. The servlet context only has the controller
now. Aspects are working properly (throwing runtime exceptions).
Didn't fix problems; just clean up left-behind junk.
Wrote the two advices properly. Tests reveils a bug to be fixed:
deleting null users.
Added a not-complete idea of some error handler.
Merge branch 'master' into auth

Conflicts:
	src/main/java/com/easoncxz/yntdl/client/RestClientImpl.java