Change prefixes in DB table naming for user created entities

Now all tables in the database, both ORIGAM default as well as user created, have all the same prefix “dbo” and are mixed together. From UX perspective it would be handy to separate these two groups.
After a discussion with Tomáš the proposed solution is to keep the default tables as dbo.XY and create a new prefix for all tables created by the user to for example “app” which shows them first.

So there will be for example:
app.Priority
app.Status
app.Task
dbo.Attachment
dbo.Counter
dbo.OrigamCalendar
etc.