Replaced dm-is-predefined definitions with simple query helper methods.
Pre-populate OS with knonw OS names (issue #34).
Use INSERT OR IGNORE.
Pre-populate URLScheme with common URI schemes (issue #34).
Replace dm-is-predefined definitions with simple query helper methods.
Dropped the dm-is-predefined dependency.
No longer use dm-is-predefined methods.
Capitalize INTO
Now that we are pre-populating tables, don't auto-migrate.