#2197: Typo
#2197: Rename some text. Get rid of file edit section.
#2197: Get rid of unneeded filter dropdowns.
#2197: Only set up ajax linkages if there's a place to put results.
#2197: Change filename search label
#2197: Remove giant whitespace where file edit form went.
#2485: Never flag a link as internal.

Internal isn't implemented yet.
#2197: Move form elements around.
#2197: Adjustments to positioning of elements.
#2197: Rearrange form elements further.
#2197: More moving around of things. Apply add_new class to Upload button, but it does nothing.
#2197: Stylistic changes to the Files tab of the link form.
#2197: Increase number of file results to 12.
Merge branch 'SCHOLAR-3.x' into 3.5-link_form_improvements
Merge pull request #2549 from openscholar/3.5-link_form_improvements

More link form improvements