Adding 'Timeline' to project workflow is cumbersome

Qt Timeline is used currently so that it requires user to open Timeline view from tools.

This is needlessly complicated and requires user to know details. 

Timeline should be a component on component gallery and user should be able to pull that out. If user wants to edit timeline content with timeline editor, they could doubleclick the object in navigator. This would open the timeline editor if needed.

Opening the timeline editor could also be done with right-click from navigator.