WIP of a hovering popup that displays an example citation for the different citation styles we use in the publications settings.  This commit is solely to get the popup working for each citation style.  #2393
Continuation of WIP.  Biblio offers a way to display an example citation but it designed for their use case only and didnt work for what I was trying accomplish so I had to borrow their code and tailor it for us.  Popups now occur for all citation styles with an example citation for each.  Next step is to add more than one example.  #2393
Added in another example, now displays a book chapter and a journal article.  #2393
Oops errant dpm.  #2393
Added an example for how different citation styles displays authors of 10 or more (ex using et all. etc).  #2393
Move the popup box down a bit a lower.  #2393
Used a variable name that was already in use ($style) which in turn broke the biblio settings, so $style => $styles resolved that issue and biblio citation style selection now works again.  #2393
Added a "type" object to display to the user what citation "type" the example shows, ie Book Chapter, Journal Article and Book.  #2393
Just random new line removals.  #2393
CSS changes to prevent the citation style names from changing to link colors, set to match the page text.  Also change the cursor away from a pointer to a default arrow. #2393
Media gallery can use files of 'document' type #2418
Edited CSS for smaller display (max 479px) image thumbnail float removed.#2820
#2059: Remove our handling of file_usage for embedded files.
Merge pull request #2852 from openscholar/2418-gallery_pdfs

Media gallery can use files of 'document' type #2418
#2059: Update hook to remove our file_usage from tables.
Merge pull request #2836 from openscholar/2393-citation-example-hover

Show citation example on hover in publication settings.
Added an empty check to cleanup profile notice.  #2855
#2853: Remove unneeded sorting condition.

This sort was completely unused, but was causing an extra join to happen on the node table. Removing the sort fixed the issue.
Forgot to add an else to my if for a breadcrumb title in taxonomy which was causing both a php notice and a breadcrumb title variable to appear empty...  #2733
Merge pull request #2862 from openscholar/2733-fix-missing-breadcrumb

Fixed small issue with breadcrumbs and taxonomy.