* define auth endpoints
* add intercepter with tests
* auth functions
* fix up the auth functions
* add functions for storing and saving the hashed password from the validator db
* validate strong password input and simplify jwt claims
* tests for db funcs
* comments for db funcs
* wrap up the authentication tests
* register auth srv
* use proper db iface package and check if existing password
* fix broken tests and add new test to check if password already exists
* use roughtime
* rlock to check the auth paths
* Merge refs/heads/master into auth-rpc
* Merge refs/heads/master into auth-rpc
* Merge refs/heads/master into auth-rpc
* leave out the stream interceptor
* resolve confs
* Merge branch 'master' into auth-rpc
* confs
* Merge branch 'auth-rpc' of github.com:prysmaticlabs/prysm into auth-rpc
* Merge refs/heads/master into auth-rpc
* Merge refs/heads/master into auth-rpc
* Merge refs/heads/master into auth-rpc
* Merge refs/heads/master into auth-rpc