Ability to view multiple tabs simultaneously

#### Issue details
I would like to view the Quick tab to monitor to keep track of altitude and battery while being able to access the Action tab at the same time.

#### Version
all versions but I am running 1.3.52 build 1.3.52.0

#### Platform
[ X] All
[ ] AntennaTracker
[ ] Copter
[ ] Plane
[ ] Rover
[ ] Sub

#### Airframe type
Quad

#### Hardware type
Pixhawk 2.1

#### Logs

No files, tests, or entry points are named. Start by locating the Mission Planner UI implementation for the Quick and Action tabs, then determine how both could remain visible simultaneously; done means users can monitor Quick information while accessing Action controls at the same time.

Written by the indexing model from the issue text.