Add yande.re

Add Yande.re support and implemented into options menu.
Changed options menu design to a table making it easier to display more
columns.
Added shuffling of images so that the images aren't clumped together by
site. Toggleable via options.
Added fixed width option so that smaller preview images aren't as
distorted. Toggleable via options.
Hopefully fixed mobile versions not working due to localstorage being
weird.
Made the masonry update on scroll so that the images build up less.