Auto-Updating #22
Description
NexusFramework needs the ability to update automatically where possible, using the standard version format of major.minor.revision to determine whether or not user-intervention may be required.
The idea is, we use a cronjob or other mechanism to have it download the updates into a sandbox and test whether or not any obvious errors occur, if they do the errors are stored and somehow prompted to the user through the controlpanel if installed.
If no errors are detected and no major versions have changed, the update is assumed to have worked fine, a backup is made and the user is notified that they are now running the newer version.
If a major version change is detected anywhere, than the user is prompted to "test" the sandbox version of the site, and "approve" it first.