[AppDB] ID checks

[Tom]

Paul van Schayck wrote:
> Hey,
> 
> A start to the AppDB. The whole system is using the strongly depreceated auto 
> registered globals. (The DB was made before this rule was made/enforced)
> This patch will just fix that problem for the browsing trough the DB.
> It will also check if we really have a numeric ID and not someone entering 
> evil SQL.
> 
> Regards,
> Paul van Schayck
> 

Yah.... The first patch to the AppDB code!

Tom