Looks up pubmed, arxiv, or ssrn
Looks up arxiv, pubmed
Only save an article if it doesn't already exist.
Add _parse_article function that abstracts out the logic for parsing a pdf
fixed some bugs with ssrn, arxiv, and pubmed imports
Add pubmed, arxiv logos
add pubmed and arxiv logos
properly return form values to autopopulate with url
Don't link directly to "create new"