utils.js: Add an LRUCache object.
suggest: Add subreddit suggest
Move LRUCache to a regular object.
events list whitespace
chaining
_query
css cleanup
Extra comma
markdown_plaintext
new GET endpoint for sr search.
multi suggest
css whitespace
translate search msg
use $.ajax
toggleClass
apply->setText
selection -> selectionIndex
comment
modulo logic
comment keycodes