Selection toggle tweaks

[KevinMehrabi]

Spacing, position, and colors for the selection toggles need to be fixed. Margin between them needs to be changed.

This is the case for Swap/Liquidity as well as for slippage tolerance

See https://www.figma.com/file/Xw4IV3k3HYvTt5bYQHXdxI/Untitled?type=design&node-id=0%3A39&mode=design&t=HAdN7TehN0zUitb9-1

[KevinMehrabi]

See how it's different. The gap in the selections are removed, and the selection's surrounding highlight (the blue part) is equal in size for every selection.