Change OpenRocketViewer to tab layout with three tabs: overview, components, and...

Change OpenRocketViewer to tab layout with three tabs: overview, components, and simulations.  Overview is populated with some high level data about the rocket - length, mass, cg, etc.  Components will be populated with the tree of rocket components.  Simulations contains the list of stored simulations.

Added length and mass preferences and wired into the application object initialization of the OpenRocket UnitGroup statics.

There is currently an issue in the Simulation list in that the motors are not being displayed.  This is because currently the motor dao is not wired into the application.

git-svn-id: https://openrocket.svn.sourceforge.net/svnroot/openrocket/trunk@278 180e2498-e6e9-4542-8430-84ac67f01cd8