[433062] Added ToggleFocusActiveViewHandler command, keybinding, and unit test

Change-Id: I6980f4d0306ca7c22d26c999830a2a85d9c5bb9d
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=433062
Signed-off-by: Gregory Amerson <gregory.amerson@liferay.com>
5 files changed