always show git hash in bs version

[prybalko]

For a tagged commit it's going to bev0.3.0-0-g2c91c85

[kirushik]

@prybalko well, we can't retroactively apply that to the existing 0.3.0, can we?
Please tag 0.3.1 with this patch in and deploy to bs.parity.io

[prybalko]

I think I can edit/remove existing tags

[prybalko]

UPD: removed v0.3.0 tag.

[kirushik]

@prybalko currently https://bs.parity.io/ says v0.2.0-91-g2c91c85 — which doesn't feel accurate to me.

Can we please in the future make releases of BananaSplit a big, manual thing?
It's not your regular webservice which can be patched in a jiffy, each release is expected to stay with its users for years without much in a way of updating.
We can't afford people getting random occasional versions without even clear versioning — and then sticking to them.