Vault Management UI (first round) (#4446)

* Add RPCs for parity_vault (create, open, list, etc.)

* WIP

* WIP

* WIP

* WIP (create should create)

* Create & close working

* WIP

* WIP

* WIP

* Open & Close now working

* WIP

* WIP

* Merge relevant changes from js-home

* Hover actions

* WIP (start of account assignment)

* Open, Close & Account assignment works

* Fix margins

* UI updates

* Update tests

* Add the parity_{get|set}VaultMeta calls

* Handle metadata

* Adjust padding in Open/Close modals

* moveAccounts take both in and out

* Adjust padding

* Fix stretch

* Optimize hover stretch

* pre-merge

* Cleanup variable naming (duplication)

* Rename Vault{Close,Open} -> Vault{Lock,Unlock}

* clearVaultFields uses setters

* TODO for small Portal sizes

* Vaults rendering tests

* .only

* libusb compile

* VaultCard rendering tests

* Update message keys (rename gone rouge)

* Display passwordHint op vault unlock
...