Polish for videos, smaller sizes, remove gif-looping options

src/assets/nsfw.png

src/components/attachment/attachment.js

src/components/attachment/attachment.vue

src/components/media_modal/media_modal.js

src/components/media_modal/media_modal.vue

src/components/settings/settings.js

src/components/settings/settings.vue

static/font/config.json

static/font/css/fontello-codes.css

static/font/css/fontello-embedded.css

static/font/css/fontello-ie7-codes.css

static/font/css/fontello-ie7.css

static/font/css/fontello.css

static/font/demo.html

static/font/font/fontello.eot

static/font/font/fontello.svg

static/font/font/fontello.ttf

static/font/font/fontello.woff

static/font/font/fontello.woff2