Made access to our users and to sensitive APIs much more secure.
Fixed error in README.
Fixed bug that prevented recommended playlists from working.
Updated TODO.
Playlists navbar option now removes search filters.
Made Babelboo logo a link.
Play playlists only when clicking on play button instead of whole card.
Removed hover of play button.
Made all CSS and font awesome local.
Added message when no playlists are found.
Removed related playlists title when no related playlists are present.
Replaced "Whatch more" text to "Finish" in the summary window.
Removed 'everything' option for the levels.
Renamed difficulty levels and moved them to a single place.
Added more clear visual feedback when answering a video.
FIXED THE YOUTUBE PLAYER NOT WORKING SOMETIMES.
Cleaned up the CSS file.
minimal cosmetic changes
removed footer from summary screen
added progress to player
logout dropdown in view
fixed missing playlist duration
Fitting player in a single window
updated todo
Merge branch 'master' into production

Conflicts:
	public/babelbooapp/play/relatedplaylist-card.html