Don't 'public' in interfaces
Get Wikipedia URLs right
Abstract and document the SWEBLE parsing methods
Implement Wikipedia TV brand hierarchy adaptor

- Includes asynchronous fetching method (FetchMeister)
    - Movie adaptor should perhaps be altered to use it too

- Also, now we try to interpret date templates! (SwebleHelper.extractDate(...)) This allows:
    - Extracting air dates of episodes
    - Extracting run dates of brands
Reorganize Wikipedia tests + placeholder TV testing
Extract IMDB id from film articles
Wikipedia updaters now report progress
Fix accessibility in LocallyCachingArticleFetcher
Fix SWEBLE un-parsing bug

Some content was being lost when reconstructing the Mediawiki source from a parsed page with nested templates (admittedly not an expected case, as usually preprocessing would have already expanded them out).

The fix is to introduce a slightly modified clone of the RtWikitextPrinter, which includes the unexpected 'garbage' nodes.