should be able to edit all params on "Add New Connection" page

[ashley-conpago]

just had the case where the example front-end code displayed an old URL that my instance was no longer hosted on, and clicking "Start OAuth Flow" hit this old URL instead of the current one.

couldn't actually find the old URL stored in the database anywhere, so I'm guessing this is in memory cache somewhere?

either way would be nice to be able to configure all parameters that button is going to send.

for clarity:

[linear]

NAN-326 should be able to edit all params on "Add New Connection" page