maybeDisplayThumbnail is invoked even when the survey is disabled,
which results in calling functions of a null object.
Change-Id: If7a48349e22069f91af20d8c4bb6a82b7339bd66
Only show the survey button if the user's language matches and the site is
enabled, and log which site we are on.
The corresponding site configuration commit is
Ic07432649906890785769ce5127761e2c84316e2
Change-Id: I575bb286f4289489b80505c901f5a9e7aeecec8b
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/261
Also make sure that the reuse dialog is positioned right, no
matter where its button is.
Also fixes some minor documentation problem with mw.mmv.ui.canvas
which I noticed in the process.
Change-Id: I86feed07738ebef012e63861ed909f3449b85a53
Also do a bunch of refactoring to:
* keep LESS rules in more sane locations so it is not as hard to get an overview
(most of the metadata panel rules were in mmv.less)
* move mmv.mixins.less up one directory as it is not specific to the UI
* move the SVG icons as all of them were related to the UI
* remove the marging-right hack which was used to keep the title text from
overflowing the button; instead use a float and overflow properties to make
sure text that is too long gets hidden
Change-Id: Icc8ea2e766be67d86ae98c734721b2185bd6c36e
