Improved Hovertags

-Hovertags are now integrated with citations. When you click on a cited
hovertag, the citation popup appears pre-filled. You can then save it
again and it updates that citation item.
-Hovertags will now hide if you move the mouse over other text inputs or
if a popup occurs. (For some reason, it won't work if you do
onmouseleave of content.
-Hovertags now move off the screen after hiding so the touch box isn't
still there.