Travis CI: site documentation update at 2014-01-07 07:21:39 UTC.

Commit: https://github.com/urho3d/Urho3D/commit/1a6970dcf23d5f6b1645ca304932f70fac784cbf

Message: Prevent message box crashes due to corrupted or missing data dir.

Delay factories debug tests after all the subsystems and resource paths are added.
Register MessageBox object factory.