Added check to see if user's version of Coda supports SiteUUID's.
Realized I could do away with the DELETE sql for updating dependencies.
Setup database info to always make sure the user's db is compatible with what the app is expecting
(Currently, it just nukes the existing database and replaces it if it's incompatible, but maybe someday we could try to preserve the data?)
Fixed issues with Coda 2.0.1 not saving registered files.
Setup validateMenuItem to only allow users to open Site Settings when a Site is open.
Added updated zip.