Fixing unit tests for client manager.

* [x] pmapi: refresh auth uid won't change
* [x] bridge tests:
    * update mocks
    * delete auth when FinishLogin fails
    * check for mailbox password
    * add `gomock.InOrder` for better test control
* [x] fix linter issues except TODOs
* [x] make rootScheme unexported
* [x] store tests: update mocks

internal/bridge/user.go

@@ -409,7 +409,7 @@ func (u *User) GetBridgePassword() string {
 }
 
 // CheckBridgeLogin checks whether the user is logged in and the bridge
-// password is correct.
+// IMAP/SMTP password is correct.
 func (u *User) CheckBridgeLogin(password string) error {
 	if isApplicationOutdated {
 		u.listener.Emit(events.UpgradeApplicationEvent, "")