Instead of downloading only the essential half of EasyList,
user can now choose to download and use the full list.
This restriction is still here because the other half of EasyList
is full of domain restricted rules that are using RegExps in our
implementation, and thus being slow.
- you can add subscriptions in AdBlock dialog or with
abp: scheme links
- however, AdBlock rules are not yet optimized for performance
so you shouldn't add too much subscriptions
performance optimizations will come in next commits
- support for element hiding is still yet to come too
closes#266
