Enhance dialog layouts (round 1) (#4637)

* Added SelectionList component for selections

* Use SelectionList in DappPermisions

* AddDapps uses SelectionList

* Fix AccountCard to consistent height

* Display type icons in creation dialog

* Complimentary colours

* Convert Signer defaults to SelectionList

* Fix Geth import - actually pass addresses through

* Work from addresses returned via RPC

* Display actual addresses imported (not selected)

* Update tests to cover bug fixed

* Prettyfy Geth import

* Description on selection actions

* SelectionList as entry point

* Update failing tests

* Subtle selection border

* Styling updates for account details

* Add ModalBox summary

* AddAddress updated

* Convert VaultAccounts to SelectionList

* Add tests for SectionList component

* Add tests for ModalBox component

* Re-apply stretch fix

* Apply scroll fixes from lates commit in #4621

* Clear name on switch (test in #4652, not pulling in)

* Remove refs (cleanup)