[UX Improvement] Payment page

[RabebOthmani]

Context

Once the extension is all setup to facilitate payments, few things on the payment page can be improved for a better experience for the users.
For example: the way continuous payments and one off payments are presented may confuse the users into thinking it is one flow

Todos

• Revamp the page layout - Check out Figma for design
  • The payment rate should be a global setting #568
  • [FEATURE REQUEST] Improve payment confirmation  #567
  • Update message 'WM has been turned off' to 'ongoing payments are disabled'
• Review copy and make it easier for users to understand ( example: continuous payment stream may not be easy to understand)