Don’t wait forever for the Companion to start

In the Emulator (or USB) don’t wait forever for the Companion to
start. Try a certain number of times and then give up.

Change-Id: I441866ebedbc9517f0f95897863197a41914d8d8
Add scrollbars=yes where we open documentation

Change-Id: Ib46ff6ec359b9cb528855efa576cbd277ef640f0
Adds checkbox property to Camera to open the front-facing camera.

Adding option to request front-facing camera.
Added default value to new property.
Updated documentation to match.

Change-Id: I18780f1bedd27266b02d40f90a3079f42e6792ec
Add a “Hard Reset” Connection Menu Item

This menu selection tells the aiStarter to run the “reset-emulator”
script. This script removes the user specific
Appinventor-emulator-data file, which will effectively reset the setup
package installation to a “factory” fresh state.

Change-Id: Icfbf0a35f2aa5d1102db27c290533e5490e38fef