Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  445256f9d660f7b1a7f8d48bb36ed8f84796211f

Styling adjustments for download panel

- Split button has been adjusted to have the same height on both parts (button and drop-down)
- The attribution panel has been adjusted to add hover states and adjust sizes and colors

Change-Id: I3ba80776add6dbca9f0b096dfe7ad4a8779f1a0d