Add installation migration and change default table prefix to cdb_

The schema here contains some differences from "1.0.x" (even though we never
made it that far :D ). These consist of renaming certain fields due to hitting
the 30 char limit for names and also why the default table prefix is being
changed. There have also been one or two fields that have been dropped as they
are no longer necessary. Migrations for these changes will full explanations
are forthcoming.