Display all types of annotations in the Timeline Viewer (video, image/drawing, audio, text) but make differences
Generally the Timeline Viewer should display all kinds of annotations (see also #1083 (closed)). However, all annotations which were added using the Post-Annotator need to be implemented/visualised differently. We should also consider that live-annotation sessions might result in annotations which (later) refer to moments in a video and some annotations which to do not have video (added without a camera running in parallel).
Maybe all annotation which do not overlap with a video (annotation of type video with purpose linking) on the Timeline have to be displayed in the Timeline Viewer, all other annotations (which overlap with a video) are only displayed in the Post-Annotator.