* Extract advanced gas input controls to their own component
* Add advanced inline gas toggle to settings
* Add optional advanced inline gas to send send screen
* Adds optional advanced gas inputs to the confirm screen
* Add info modals for advanced gas inputs.
* Fix translation of advance gas toggle description.
* Lint and unit test fixes for inline-advanced-gas-inputs
* Increase margin above advanced options button on send screen
* Move methods from constructor to property syntax in advanced-gas-inputs.component
* mm-controller - dont overwrite existing rpc settings
* ui-networkDropdown - dont pass old network as chainId
* add methods preferencesController.updateRpc and metamaskController.updateAndSetCustomRpc
* use updateAndSetCustomRpc in settings to allow rpcs to be updated
* use new rpc as nickname if no nick name has been supplied
* fix update rpc method
Chi Kei Chan
Dan Finlay
Dan J Miller
Whymarrh Whitby
Frankie
Alexander Tseung
bitpshr
HackyMiner
Alexander Tseung