[mythtv] [patch] Channel visible indicator

[Robert Kulagowski]

> It is not related to favorites (as others have noted).  It is about hiding
> channels that you don't want to see or don't get on your service.  Currently
> I could do this by commenting them out from XMLTV configuration and removing
> from the DB but as someone noted, they come back the next time I run
> configuration or other functions that reinit the XMLTV stream.

Would this also prevent presenting program information for channel I 
don't get?  For example, I don't get HBO, so if I click on "Movies" in 
MythWeb will this ensure that HBO's offerings aren't in the matrix?