Feature request: Notify about feeds that could not be loaded

[ghost]

I'd almost consider this a bug.

I have a few feeds that started 404ing (cool uris never change, in reality though...) and a few 403s (mostly due to using OrBot as a proxy, but still), but there seems to be no indication of that inside SpaRSS. I only noticed when switching off OrBot and suddenly a few feeds were massively populated that I hadn't seen in ages...

I suggest giving the user some indication which feeds could not be loaded (status codes, malformed xml, ideally with technical details), so there is a chance to notice, diagnose and fix the problem instead of failing silently ;-)

[ghost]

I am aware that at least some.information is visible in the feed list when un-hiding all feeds, but by definition that information only shows up when one is explicitly looking for it (I at least default to only seeing feeds with new content, which error'd feed can't have). I'm thinking an actual android notification or a fake/system/SpaRSS "item" with such information or even a dedicated icon with separate view would be much better in order to actually notice a problem ;-)