Tweak mythweb "New Titles, Premieres" canned search

[Robert Tsai <rtsai1111>]

This makes the mythweb "New Titles" search more like the mythfrontend "New Titles" search. It adds:

• Network broadcast premieres of movies (Terminator 3)
• A hack to catch more pilot episodes of new series ("Conviction: Pilot" has a weird programid). Many TV shows' first episodes have a subtitle of "Pilot" so this does not seem to be too bad of an attempt.

I elected not to make it completely identical to mythfrontend's "New Titles" search. That query includes a left join on the "oldprogram" table (e.g., "have we seen this program in the past 320 days' worth of listings?") and makes the query take on the order of 15-20 seconds instead of a few seconds.

[xris]

(In [9126]) apply patch to close #1329