Logs metadata panel open/close by scroll. When the panel is opened
via keyboard or the "view terms" button, both a normal and a scroll
opening event is logged (same for closing). When the panel is opened
in fullscreen mode, neither event is logged.
Change-Id: I09092b8b6c20e6fea03b4fe59c811d7b441ca224
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/559
- Fixes the bug where the options menu wouldn't open if media
viewer was reopened
- Adds human-readable console messages for the options actions
- Makes the tooltip a tipsy one like all the other buttons
- Fixes the tooltip copy, it was referring to "previews", which we
said we wouldn't do anymore, in favour of "Media Viewer"
Change-Id: I1590f9501cc6c406cc1f466b414062d4d6435c1b
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/963
