[mythtv] Unable to Add Override via MythWeb

[Derek Battams]

Quoting Chris Petersen <lists at forevermore.net>:

>> Before I start tracing through the code, is there a quick explanation
>> as to why Power Search rules don't allow overrides via MythWeb?  If
>> it's something that can be addressed then I'd be willing to address it.
>
> Are you using .19?
>
> -Chris

SVN 8928.

  - Derek