* prepare validator for web usage
* wallet exists func in rpc server
* only initialize wallet if feed exists and wallet also exists
* enabling web via a feed
* wallet creation works but needs to be able to recover from mnemonic via api
* ensure logic works
* Merge branch 'master' into validator-web
* fix up tests
* test file
* wallet rpc tests
* add all tests to create wallet
* Merge branch 'master' into validator-web
* imports
* Merge branch 'validator-web' of github.com:prysmaticlabs/prysm into validator-web
* Merge refs/heads/master into validator-web
* Merge refs/heads/master into validator-web
