fixed/changed/added: IMDB scraper improvements

fixed/changed:
- all unneeded scraper fields are disabled for preview in search result
window (more speed)
- all unneeded scraper fields are disabled for verify button in search
result window (more speed)
- IMDB trailers disabled in settings (broken, now more speed while
scraping and preview)

added:
- new settings to enable/disable: partial, popular and tv movie search
results (much more speed)

known bug:
- posters in search result window are gone after selecting another
result (now disabled in code). If anyone understand the issue, please
fix it. Check line 126 in dlgIMDBSearchResults.vb.

TODO:
- add tv movies search results to auto scraper
- fix status bar while IMDB ID verification