Don't return list containing None for subtitles.

Working on #39
Cope with semicolon separated lists of language names in the source
file.

Working on #39
Tweaks suggested by M.Dorrington.
Remove code to add/remove to/from favorites.
This is better done through the TED website.

#2
Fiddling.

#32
Performance test for speakers_scraper.

#33
Get speakers list using parseDOM - parsing goes from 10s to 0.1s on
Intel U4100.

#33
Move get talks for speaker to speakers_scraper,
and add a test for it.

#33
Convert get_talks_for_speaker to parseDOM.

#33
Performance tests for themes.

#33
Use test_util.

#33
Convert themes scraper to parseDOM.
For test case 30s > 0.2s on Intel E4100.
Also centralize resizing images.

#33
Remove getNavItems as it isn't used.

#33
Start of a scraper for search page.

Issue #12
Fix search_scraper and test.

#12
Looks like this talk picked up two more translations.
Changes to talk titles.
Set duration of video correctly.
Issue #41
Lets get a release out this year.
Plug in search scraper (again).

Working on #12