[beta] UI backports (#4993)

* [ci skip] js-precompiled 20170314-121823

* Attach hardware wallets already in addressbook (#4912)

* Attach hardware wallets already in addressbook

* Only set values changed

* Add Vaults logic to First Run (#4894) (#4914)

* Add ability to configure Secure API (for #4885) (#4922)

* Add z-index to small modals as well (#4923)

* eth_sign where account === undefined (#4964)

* Update for case where account === undefined

* Update tests to not mask account === undefined

* default account = {} where undefined (thanks @tomusdrw)

* Fix Password Dialog forms style issue (#4968)