Add panels with overlay settings for strips and preview and overlay enable/disable button. Entries from the View menus moved to the overlay panels, which will simplify cluttered View menus. Additional options have been added: - Strip Name - Strip Source(ex. path) - Strip Duration So users can now select what info they need to see on the strips. When No text is displayed, waveforms are drawn in full height. Reviewed By: ISS, HooglyBoogly, pablovazquez Differential Revision: https://developer.blender.org/D9751