Automatic Updates

Autoupdate->InstallModule required an extra step so that the new module could be included, so added FinishInstall function. Also made some changes to how updates feed is published on the build server. There's now an autoupdate-testing template to publish a testing feed when calling CreatePost. This means some sites can choose to receive automatic updates earlier, and if there are any problems the update can now be removed so that a new update can be built with the same version number.
autoupdate 5 1