Follow-on to #2033 - Change variables and js script loading for Flash Fl...

...owplayer.

- changed movie_img event variable names to have "flash" in them.
- moved flowplayer.js loading from page.html.php to movieplayer-flash.
- removed conditional loading for small, photo-specific JS files in page.html.php
to keep combined JS consistent between page types (better for caching).