ui: button for save/restore camera state
ui: button for save/restore camera state

kswaldemar/rewind-viewer,kswaldemar/rewind-viewer,kswaldemar/rewind-viewer,kswaldemar/rewind-viewer,kswaldemar/rewind-viewer,kswaldemar/rewind-viewer,kswaldemar/rewind-viewer,kswaldemar/rewind-viewer