+* only offer installed browsers in the config GUI
+* make continuous mode operation the default; disable non-continuous-mode on
+ Fremantle (needed for correct operation on D-Bus system bus)
+* Fremantle: major overhaul of MicroB launching to improve robustness; should
+ result in speed and behavior indistinguishable from when Browser Switchboard
+ isn't installed when MicroB is configured as default browser