Makefile: Release build as WINEXE, debug as EXE
Prefs Model: Oops, call Load() on Save() to re-read settings
Prefs Model: clean up
PartsDb: Execute is now common to all DBs
Util: Cleaner output
PartsView: Disable delete and repair
MySqlPartsDb: Execute is now an override
SqlPartsDb: First pass
MainApp: Refresh PartTypes on prefs change
MainApp: Switch to SqlPartsDb