* Switch keys commands to keyring
* Replace NewKeybase with NewKeyring
* Fix delete test
* Purge dead code
* Override COSMOS_SDK_TEST_KEYRING envvar to switch to a test keyring
* s/unningOnServer/unningUnattended/
C'ing @tnachen
* Add deprecated warning, output looks like the following:
```
$ gaiacli keys update --help
Command "update" is deprecated, it takes no effect with the new keyring
based backend and is provided only for backward compatibility with the
legacy LevelDB based backend.
Refer to your operating system's manual to learn how to change your
keyring's password.
Change the password used to protect private key
Usage:
gaiacli keys update <name> [flags]
Flags:
-h, --help help for update
Global Flags:
--chain-id string Chain ID of tendermint node
-e, --encoding string Binary encoding (hex|b64|btc) (default "hex")
--home string directory for config and data (default "/home/alessio/.gaiacli")
-o, --output string Output format (text|json) (default "text")
--trace print out full stack trace on errors
```
* Update multisign command
* Modify server.GenerateSaveCoinKey()
* GenerateSaveCoinKey more modifications
* Update docs
* Update upgrade module
Alessio Treglia
Marko