Add some testing around adding/replacing promotional coupons and what
the user sees in the UI depending on their coupon status.
Change-Id: Ice6c0a0644d05af0c30c87a93ba963c0bb09e32d
The code will be clearer if the browser starting is entirely separate
from the testplanet and edge setup.
Change-Id: I6d26aa25f4c2a929ba4eda1388234e8aeec518c7
Move ui tests to testsuite/ and introduce a new go.mod.
This prevents cyclic references when building edge binaries for testing.
Change-Id: I613fdc21ef9eaffba2052f6ad973bfa18c7c86bd