style carousel next/prev buttons, disable youtube annotation on player
make changes to landing page
add search bar for landing page
Merge pull request #26 from kelvinblade/master

merge
add cards to categories page, add search toggle button to header, and search container slide down feature.
add scrolltop animation, add search container to category-page
resize jumbotron
Move url input code to header.js
Voting will now change top voted category and move video into category