This commit fixes the issue where the "Click to view or download" comes
to the right of the image title. We add a parent division in this commit
that leads to the break tag being applied successfully, shifting the
secondary tooltip content ("Click to view or download") to next line.
The second line of a multi-line tooltip generally desctribes the
additional information which helps the major text, i.e. the first
line of the multi-line tooltip, hence it would be a good idea to
add italics styling, to differentiate it from the main title. We
describe a simple ".italic" class for the same.
We also add a shorter line height to this description using the
".tooltip-inner-content" class.
This commit adds a tippy tooltip for inline image previews in messages.
There exists some (reasonable) logic in `static/js/util.js` which
overrides all title attributes for links to user-uploaded content to
ensure they always display "Download <filename>". This doesn't make
sense for inline images specifically because they will be opened in a
ligthbox, so we prevent that.
There is an additional tippy instance created in `static/js/tippyjs.js`
to add tippy tooltips to inline images, which takes advantage of the now
preserved title attribute of the parent link.
