Set titleclip resolution (width, height) properties based on the project settings
@jeff
Submitted by Jeff F.T. Assigned to Thibault Saunier @thiblahute
Description
When creating a title clip, its resolution should be set based on the project settings (and when changing the resolution/aspect ratios in the project settings, we should handle that automatically).
First, we need a way to tell GES to set those properties on titleclip elements: bug # 703482.
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=708409