Several related changes to text truncation:
* remove untruncate-on-click so untruncated text is selectable
(untruncate will happen on click to the canvas are instead,
to be implemented in a followup patch)
* simplify the truncate/untruncate logic to be wholly based on
panel open/close state, and fix a bug which made panel state
and text truncation state inconsistent when prev/next
navigating while keeping the panel open.
* remove several variations on scrolling the panel in favor of
using toggle + remove some other unused truncation-related code
* fix a minor unrelated style bug which made truncate/untruncate more
jarring than it had to be when the title was short by making the title
higher on panel open even though the text did not use the extra height
* align title ellipsis better
* make sure clicking on the truncated title works even if the click is
between lines and so misses the inline box of the <span>
Change-Id: Ie0b3afb3833102b6a9812cb7fe2df78ec5eb8396
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/983
Also fixes popup texts which should have been updated in the parent commit
and the panel opening mechanism which did not work when the below-the-fold
description box was display:none-d.
Change-Id: I5fc37429a7dc7a8f1517fa42375cd140d7d11674
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/589
Reveal the full title + author + source when the user clicks one
of these, and make some related changes:
* expand the above-the-fold part of the metadata panel so they fit
* make the stripe buttons smaller and hide their text
* scroll the panel up if necessary
* modify tooltip texts when there is more text to show
Change-Id: I304297bc5e7be7b16e2fc4bde66ac19641b00029
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/396
