Make debug bar controls narrower

* Merge dump model (on change), and replace with icon.
* Remove 'start'/'stop' from fillibuster. Toggle state indicates this.

Change-Id: I8eb27a192850bec175b120a576aec62fb0c14969
Improve logging

* Refuse to log collapsed selections.
* Log all ranges on a table selection.

Change-Id: Ic5e3f56a0b51e3b035fa61b7594ccffbc1b14d72
Merge "Make debug bar controls narrower"
Merge "Improve logging"