return 400 status code for missing json fields when removing bookmarks
return 405 errors if get request is sent to bookmark add view
return proper status codes & add tests for bookmarks
add bookmark_exists view function
add csrf_exempt decorator for bookmark_exists
remove bookmark stuff from core.css, all in doc-embed.css now
hide bookmark divs initially
create separate divs for bookmark active/inactive icons
query server when page loads to see if bookmark exists
rename test to reflect change in function being tested