Remove gas limit from upload wasm contracts UI

[ps1dr3x]

This should close #2606 and solve the error that currently prevents the upload of wasm contracts.

It probably needs a review as I'm not familiar with the code base.

[jacogr]

Thanks an absolute million for this.

It is absolutely correct in what it does to support anything after alpha.6, but that is also where we have an issue - chains like Edgeware (contracts) still have the older versions. and it is out there in the wild.

In the past we just broke contracts compat and expected people to upgrade, in this case we (sadly) need logic for both cases. Which, well, just complicated matters.

So I'm strongly in favor of just merging and not having the complication of older support (which we need to clean up at some point), however atm we also don't have an alpha.7 yet. I will have to sleep on it, not really in favor of older support (we have enough of that in a number of places which just makes things harder than it should be), but don't think we can get away without it in this case.

TL;DR It is perfect for current master, but also needs to cater for older. (Which would mean detection of the chain based on the number of args in the actual call and tweaking the tx/UI based on that)

[polkadot-js-bot]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.