Remedy uninstall bug

The DDL API is a bit inconsistent about what types it accepts; we'll
just give it what it wants ;-)
Fix boilerplate
Remove unnecessary import
Set visibility on lang::$LANG_MODULE
Yes We Can.

* I'm a moron - "primary" is obviously a reserved keyword in most
RDBMSes. Rename awe_sources.primary to awe_sources.isprimary
* Field management logic starting to take shape
* Lazy loading that nearly works (tm) in model objects
* Removed debugging calls that were mistakenly committed
* Prepopulate field data in forms with set_data()