diff --git a/cps/static/js/libs/screenfull.min.js b/cps/static/js/libs/screenfull.min.js
index e7a33a42..70b732e9 100644
--- a/cps/static/js/libs/screenfull.min.js
+++ b/cps/static/js/libs/screenfull.min.js
@@ -1,7 +1,7 @@
 /*!
 * screenfull
-* v3.3.0 - 2017-07-06
+* v4.2.0 - 2019-04-01
 * (c) Sindre Sorhus; MIT License
 */
 
-!function(){"use strict";var a="undefined"!=typeof window&&void 0!==window.document?window.document:{},b="undefined"!=typeof module&&module.exports,c="undefined"!=typeof Element&&"ALLOW_KEYBOARD_INPUT"in Element,d=function(){for(var b,c=[["requestFullscreen","exitFullscreen","fullscreenElement","fullscreenEnabled","fullscreenchange","fullscreenerror"],["webkitRequestFullscreen","webkitExitFullscreen","webkitFullscreenElement","webkitFullscreenEnabled","webkitfullscreenchange","webkitfullscreenerror"],["webkitRequestFullScreen","webkitCancelFullScreen","webkitCurrentFullScreenElement","webkitCancelFullScreen","webkitfullscreenchange","webkitfullscreenerror"],["mozRequestFullScreen","mozCancelFullScreen","mozFullScreenElement","mozFullScreenEnabled","mozfullscreenchange","mozfullscreenerror"],["msRequestFullscreen","msExitFullscreen","msFullscreenElement","msFullscreenEnabled","MSFullscreenChange","MSFullscreenError"]],d=0,e=c.length,f={};d<e;d++)if((b=c[d])&&b[1]in a){for(d=0;d<b.length;d++)f[c[0][d]]=b[d];return f}return!1}(),e={change:d.fullscreenchange,error:d.fullscreenerror},f={request:function(b){var e=d.requestFullscreen;b=b||a.documentElement,/5\.1[.\d]* Safari/.test(navigator.userAgent)?b[e]():b[e](c&&Element.ALLOW_KEYBOARD_INPUT)},exit:function(){a[d.exitFullscreen]()},toggle:function(a){this.isFullscreen?this.exit():this.request(a)},onchange:function(a){this.on("change",a)},onerror:function(a){this.on("error",a)},on:function(b,c){var d=e[b];d&&a.addEventListener(d,c,!1)},off:function(b,c){var d=e[b];d&&a.off(d,c,!1)},raw:d};if(!d)return void(b?module.exports=!1:window.screenfull=!1);Object.defineProperties(f,{isFullscreen:{get:function(){return Boolean(a[d.fullscreenElement])}},element:{enumerable:!0,get:function(){return a[d.fullscreenElement]}},enabled:{enumerable:!0,get:function(){return Boolean(a[d.fullscreenEnabled])}}}),b?module.exports=f:window.screenfull=f}();
\ No newline at end of file
+!function(){"use strict";var u="undefined"!=typeof window&&void 0!==window.document?window.document:{},e="undefined"!=typeof module&&module.exports,t="undefined"!=typeof Element&&"ALLOW_KEYBOARD_INPUT"in Element,c=function(){for(var e,n=[["requestFullscreen","exitFullscreen","fullscreenElement","fullscreenEnabled","fullscreenchange","fullscreenerror"],["webkitRequestFullscreen","webkitExitFullscreen","webkitFullscreenElement","webkitFullscreenEnabled","webkitfullscreenchange","webkitfullscreenerror"],["webkitRequestFullScreen","webkitCancelFullScreen","webkitCurrentFullScreenElement","webkitCancelFullScreen","webkitfullscreenchange","webkitfullscreenerror"],["mozRequestFullScreen","mozCancelFullScreen","mozFullScreenElement","mozFullScreenEnabled","mozfullscreenchange","mozfullscreenerror"],["msRequestFullscreen","msExitFullscreen","msFullscreenElement","msFullscreenEnabled","MSFullscreenChange","MSFullscreenError"]],l=0,r=n.length,t={};l<r;l++)if((e=n[l])&&e[1]in u){for(l=0;l<e.length;l++)t[n[0][l]]=e[l];return t}return!1}(),r={change:c.fullscreenchange,error:c.fullscreenerror},n={request:function(r){return new Promise(function(e){var n=c.requestFullscreen,l=function(){this.off("change",l),e()}.bind(this);r=r||u.documentElement,/ Version\/5\.1(?:\.\d+)? Safari\//.test(navigator.userAgent)?r[n]():r[n](t?Element.ALLOW_KEYBOARD_INPUT:{}),this.on("change",l)}.bind(this))},exit:function(){return new Promise(function(e){if(this.isFullscreen){var n=function(){this.off("change",n),e()}.bind(this);u[c.exitFullscreen](),this.on("change",n)}else e()}.bind(this))},toggle:function(e){return this.isFullscreen?this.exit():this.request(e)},onchange:function(e){this.on("change",e)},onerror:function(e){this.on("error",e)},on:function(e,n){var l=r[e];l&&u.addEventListener(l,n,!1)},off:function(e,n){var l=r[e];l&&u.removeEventListener(l,n,!1)},raw:c};c?(Object.defineProperties(n,{isFullscreen:{get:function(){return Boolean(u[c.fullscreenElement])}},element:{enumerable:!0,get:function(){return u[c.fullscreenElement]}},enabled:{enumerable:!0,get:function(){return Boolean(u[c.fullscreenEnabled])}}}),e?(module.exports=n,module.exports.default=n):window.screenfull=n):e?module.exports=!1:window.screenfull=!1}();
\ No newline at end of file