CodeSnip Old Code (SVN)

* Renamed USnippetKindInfo unit as DB.SnippetKind.
* Updated all using units.

* Moved TSnippetKind and TSnippetKinds from DB.USnippet unit to USnippetKindInfo.
* Updated all affected units.

* Renamed USnippets unit as DB.UMain.
* Updated all affected units.

* Extracted code that deals with categories and category lists from USnippets into new DB.UCategory unit.
* Modified affected code accordingly.

* Extracted code that deals with snippets and snippet lists from USnippets into new DB.USnippet unit.
* Modified affected code accordingly.

* Renamed various types in USnippetsIO to have a database related name.
* Modified affected code.

* Renamed various types in USnippets to have a database related name.
* Modified affected code.

* Renamed "Snippets" function in USnippets to "Database".
* Updated all using code.

Removed unnecessary cast.

Revised TOverviewFrame.TTVDraw overrides to use new IView IsUserDefined and IsGrouping methods.