Add api switch

[realcodywburns]

Having a switch to go between etherhub, epool, and gastracker or any other known public api would be nice.

[elaineo]

great idea. are epool and gastracker open to that? the etherhub node (that's what the wallet is using right now) is running on a low-budget server and requests can be slow.

[splix]

gastracker doesn't support whole set of api, for example filters aren't supported atm. but other things should work

[elaineo]

awesome. etherwallet only uses getBalance, sendTx, and contract interactions.

[splix]

that should work. You try https://api.gastracker.io/web3