Resolve accounts loading promise in all cases

[ChristophWurst]

fixes #1458

My bad, I forgot to resolve the promise when no accounts are configured, which led to the backbone router not being started. Small bug with great impact.

@Gomez @jancborchardt @irgendwie @DeepDiver1975

@Scheirle @kajla please check if that fixes the reported issue for you

Note to myself: Test releases before releasing…

[Scheirle]

👍 fixes the issue

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But after the account setup you are somewhat stuck in a setup mode (till you reload the page manually):

1. setup form is still visible (till you cilck on a folder)
2. The spinning wheel (on the folder list) is always present (even after the folders are loaded)

[ChristophWurst]

But after the account setup you are somewhat stuck in a setup mode (till you reload the page manually):

1. setup form is still visible (till you cilck on a folder)
2. The spinning wheel (on the folder list) is always present (even after the folders are loaded)

I guess that's what I described in #1424 (comment)
I'll fix that too, thanks a lot for your feedback :-)