Add signing ability to UI #32
Description
One of a Pokt Node Runners route of Trophy steps towards claiming a Vote in the Pokt DAO requires proving you own your own node by self signing your nodes address. This can only currently be done manually over SSH or direct console access to your dappnode with root privileges.
Originally conceived as a static function that posts the nodes self signed address to the dappmanager sent info section.
But upon further discussion we determined to add signing functionality to the react UI app allowing for any message to be signed entering the message to be signed in a field and then when new button called sign is pressed the contents of the message box will be signed by the account holders key and display the signature in an easily copiable not editable field.