Merge branch 'cast-and-crew'
Handle 204 response code as success

This needs to be changed in future to use the success callback instead of
doing it this way.
Remove an unnecessary forward slash
Clean up the web-services client

Add success and error callbacks to each web-service call, also moving the
success/error logic out of the general web-service client code back to the
view/page 'controller' logic. The Javascript is now decoupled from the page
views.

Disable the setting of cast/crew models because of 'strangeness' reported
in the Qt message log (race condition?).
Merge pull request #9 from caprica/cleanup-webservices-client

Cleanup web-services client