Fix issue with options dialog when media viewer has been reopened

- 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
Merge "Fix issue with options dialog when media viewer has been reopened"