TweetInfoPage: Remove old comments
dm-list-entry: Remove placeholder texts
DMListEntry: Don't make the time delta small
MultiMediaWidget: Don't show right-click media if media == NULL
VideoDialog: Use Gdk.X11.Window
Merge branch 'multimedia' of ssh://baedersonline.de:2207/git/Corebird into multimedia

Conflicts:
	src/window/VideoDialog.vala
dm-thread-entry: Don't show html entities in the last message
DMThreadsPage: Don't show html entities in notifications
DMThreadsPage: Save the last_message(id) after updating it
VideoDialog: Fix animated GIF source string