Adding AnimeLab streaming links

[edpenz]

I've written a service handler for the AU/NZ streaming site AnimeLab. A few notable points:

• To fetch episode and show lists it will require a proxy if run outside of AU/NZ, this can be set in the config.ini. 139.59.143.25:3128 seemed reasonably reliable and quick in testing as a free option.
• Most episodes are delayed by at least a few hours on the site, so it's probaby not very useful for automatic posting, but having the links would still be nice.
• There are a couple of small fixes/improvements in separate commits which are needed for
  • reading the proxy configuration
  • linking the streams to the correct show ID

[TheEnigmaBlade]

I hate to be that guy, but can you switch animelab.py to tabs? 🔥

[edpenz]

Done, I figured there'd be something I'd forget to match.