Pull in no-ff mode, if ff is not possible

[stefan-jung]

Sometimes oxygen-git-plugin cannot pull, if fast forward is not possible. Nothing happens, no message appears, it just does not work.

To reproduce on CLI, I write:

$ git fetch && git pull
fatal: Not possible to fast-forward, aborting.

So, to pull, I have to pull in no-ff mode.

$ git pull --no-ff

I would expect, that oxygen-git-plugin would tell me, that ff is not possible and ask me, whether I'd like to pull in no-ff mode.