[trojita] /: Merge changes from topic 'network-unavailable-and-offline-are-different'

[Gerrit Code Review]

Git commit 5a330ec192c257fcc6b0563cb14be6488f0c9d15 by Gerrit Code Review, on behalf of Jan Kundrát.
Committed on 12/01/2017 at 08:42.
Pushed by gerrit into branch 'master'.

Merge changes from topic 'network-unavailable-and-offline-are-different'

* changes:
  Merge branches 'fetch-binary-cte' and 'network-unavailable-and-offline-are-different'
  GUI: Tweak display of parts that failed to load in WebKit
  Gui: Fix icon name
  GUI: Show accurate error message when a part fails to load in the GUI


https://commits.kde.org/trojita/5a330ec192c257fcc6b0563cb14be6488f0c9d15