Trigger the Search Function on Enter Key

[dchen278]

On the search bar for both the articles and drafts page, you have to click the search icon to actually search. To make the UX nicer, implement a feature such that when you press enter, it searches the query.

[EricShi1255]

Enter key already triggers search, though e.key could be used to in addition to e.keyCode, which is apparently deprecated.
Not really related but search doesn't work or takes too long if you try a broad term like "study", which might've made it seem like it wasn't working