Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  02897fda9c9632cba55b536aabb6c2de933f5388

Chevron/metadata UI behavior improvements

When the multimedia panel is closed, the chevron
points upwards, otherwise it points downwards
Pressing the up and down arrows on the keyboard
opens and closes the metadata panel

Change-Id: I7dd31f3cc3d90f9342845faea2c6cfea3b40e232