[FIX] Show memo in payment details
[TASK] Change manual button process label from 'done' to 'process'
[TASK] Update README with usage instructions and development notes
[TASK] Dampen glow of modal
[TASK] Convert send payment form to be a modal
[FIX] Prevent top bar from becoming taller when screen width shortens
[FEATURE] Add username field to login for gateways with custom domain
[TASK] Remove extra negative sign in payment details
[TASK] Decode memos in payment detail