Do not issue withdrawal until admin approves

Update frontend UI to let user know that approval is in progress (front#2238 (closed))
Update mobile UI to let user know that approval is in progress (mobile-native#1503 (closed))
For admins, show some high level stats such as 'referrer', join date, recent transactions (front#2239 (closed))

Edited Nov 13, 2019 by Emiliano Balbuena