Updated MySQL setup script
Updated MySQL setup script

- All id (primary key) columns have been changed to int(10) unsigned not null
- Foreign keys have been added to all tables referencing other tables
- Default `uid` and `gid` values in `domains` table have been changed to `65534`. This alleviates the need to edit this file manually before applying it. From looking at the code, it seems to me that `uid` and `gid` are always passed when creating or editing a domain, so this requirement to edit the SQL default value is most likely unnecessary

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