Make the system UI update the focus for 0.16

- notes that all the CLI improvements in 0.15 and 0.16
  mean we need to reassess the order of feature priority
- also removes the tentative version targets from the
  individual design proposals, since those regularly get
  out of date

Change-Id: I69ad061858ded30b4a8037be16e9d93ccbc4dc16
Separate out in-progress proposals

Change-Id: Ic9d541e3f0434f89a0800adb80babbf9d8badf4a
Merge "Make the system UI update the focus for 0.16"
Merge "Separate out in-progress proposals"