* Part 1, separate swap and send, move duplicate code into separate files

* Move some more constants out of the swap/send

* Support defaults from URL parameters

* Implement query string parsing via a redux action

* Finish merging the changes

* Fix the slippage warnings

* Clean up some other files

* More refactoring

* Move the price bar out of the component

* Move advanced details and some computations into utilities

* Make same improvements to send

* Approval hook

* Swap page functional with swap callback hook

* Swap/send page functional with swap callback hook

* Fix lint

* Move styleds.ts

* Fix integration test

* Fix error state in swap and move some things around

* Move send callback out of send page

* Make send behave more like current behavior

* Differentiate swap w/o send on send page from swap w/o send on swap page

* Remove userAdvanced which was always false

* Remove the price bar which is not used in the new UI

* Delete the file

* Fix null in the send dialog and move another component out of send

* Move the swap modal header out to another file

* Include change after merge

* Add recipient to swap message

* Keep input token selected if user has no balance and clicks send with swap

* Move the modal footer out of send component

* Remove the hard coded estimated time

* Fix the label/action for swap/sends

* Share the swap modal footer between swap and send

* Fix integration test

* remove margin from popper to suppress warnings

fix missing ENS name recipient link

default deadline to 15 minutes

* ensure useApproveCallback returns accurate data

* clean up callbacks

* extra space

* Re-apply ignored changes from v2 branch ExchangePage file
Co-authored-by: Noah Zinsmeister <noahwz@gmail.com>