Add SerialZone.cz support

Czech and Slovak subtitles
Merge pull request #180 from beam/serialzone

Add SerialZone.cz support
fix search on titulky.com

newly unlogged user doesn't get added_on in results
let the skin handle this
cosmetics - this is not used anywhere
onFocus gets triggered each time you move your mouse. make sure we only set the selected item one. fixes trac #14410
Massive change on subdivx site: subtitles link moved to details page, ads included

Now you can't download subtitles from the results page, you need to go to the details to get the link. Google Ads added to the description. Commit fixes all the above.
Merge pull request #181 from beam/titulky_com_fix

fix search on titulky.com (service Titulky)
Merge pull request #182 from EnricGodes/patch-1

Massive change on subdivx site: subtitles link moved to details page, ad...
3.9.9
serialzone.cz typo fix
Merge pull request #183 from beam/serialzone_typo_fix

serialzone.cz typo fix
extract other than zip archives

you can use 3rd return param from download_subtitles() as suffix of subtitles (return True, sub_lang, "rar")
Merge pull request #184 from beam/extract_other_suffix

extract other than zip archives
add edna.cz support
Merge pull request #185 from beam/edna

add edna.cz support
Handle bierdopje's HTTP error 429 (too many requests)
Updated service.py - subtitle_pattern change and cookie support

Current ondertitel.com support is broken. They've changed the html layout and are using a cookie now (to prevent hotlinking?). Cookie "download_id" which has to contain "movieid.html" as content. I removed urllib2 and replaced it with requests, much easier to use imho.
Update addon.xml - added module.requests

Request module is needed for the new ondertitel.com sub fetching.
edna.cz handle redirect as result of show search