Import translation work from https://crowdin.com/project/ublock

New revision for stable release

Import new `en-GB` from https://crowdin.com/project/ublock

New revision for stable release

Fix error when loading a non-cached non-local asset

The error condition was triggered when the following
conditions were met:

- Load a non-local asset, i.e. selecting a filter list which
  is not part of the package

- The non-local asset is not in the local cache

New revision for stable release

New revision for stable release

New revision for stable release

New revision for stable build

New revision for stable release