Got TinyMCE 5 added in barely working state

- Some extensions & custom actions not working.
- Updated anything visual to not be breaking (Icons) and anything
  functional that prevented loading.

public/libs/tinymce/plugins/importcss/plugin.min.js

@@ -1 +1,9 @@
-!function(){"use strict";var e=tinymce.util.Tools.resolve("tinymce.PluginManager"),d=tinymce.util.Tools.resolve("tinymce.dom.DOMUtils"),v=tinymce.util.Tools.resolve("tinymce.EditorManager"),h=tinymce.util.Tools.resolve("tinymce.Env"),y=tinymce.util.Tools.resolve("tinymce.util.Tools"),o=function(e){return e.getParam("importcss_merge_classes")},n=function(e){return e.getParam("importcss_exclusive")},_=function(e){return e.getParam("importcss_selector_converter")},r=function(e){return e.getParam("importcss_selector_filter")},i=function(e){return e.getParam("importcss_groups")},u=function(e){return e.getParam("importcss_append")},l=function(e){return e.getParam("importcss_file_filter")},a=function(t){return"string"==typeof t?function(e){return-1!==e.indexOf(t)}:t instanceof RegExp?function(e){return t.test(e)}:t},f=function(f,e,m){var g=[],n={};function p(e,t){var n,r,i,c=e.href;if(r=c,i=h.cacheSuffix,"string"==typeof r&&(r=r.replace("?"+i,"").replace("&"+i,"")),(c=r)&&m(c,t)&&(o=c,u=(s=f).settings,!(l=!1!==u.skin&&(u.skin||"lightgray"))||o!==(u.skin_url?s.documentBaseURI.toAbsolute(u.skin_url):v.baseURL+"/skins/"+l)+"/content"+(s.inline?".inline":"")+".min.css")){var s,o,u,l;y.each(e.imports,function(e){p(e,!0)});try{n=e.cssRules||e.rules}catch(a){}y.each(n,function(e){e.styleSheet?p(e.styleSheet,!0):e.selectorText&&y.each(e.selectorText.split(","),function(e){g.push(y.trim(e))})})}}y.each(f.contentCSS,function(e){n[e]=!0}),m||(m=function(e,t){return t||n[e]});try{y.each(e.styleSheets,function(e){p(e)})}catch(t){}return g},x=function(e,t){var n,r=/^(?:([a-z0-9\-_]+))?(\.[a-z0-9_\-\.]+)$/i.exec(t);if(r){var i=r[1],c=r[2].substr(1).split(".").join(" "),s=y.makeMap("a,img");return r[1]?(n={title:t},e.schema.getTextBlockElements()[i]?n.block=i:e.schema.getBlockElements()[i]||s[i.toLowerCase()]?n.selector=i:n.inline=i):r[2]&&(n={inline:"span",title:t.substr(1),classes:c}),!1!==o(e)?n.classes=c:n.attributes={"class":c},n}},T=function(e,t){return null===t||!1!==n(e)},c=x,t=function(h){h.on("renderFormatsMenu",function(e){var t,p={},c=a(r(h)),v=e.control,s=(t=i(h),y.map(t,function(e){return y.extend({},e,{original:e,selectors:{},filter:a(e.filter),item:{text:e.title,menu:[]}})})),o=function(e,t){if(f=e,g=p,!(T(h,m=t)?f in g:f in m.selectors)){u=e,a=p,T(h,l=t)?a[u]=!0:l.selectors[u]=!0;var n=(c=(i=h).plugins.importcss,s=e,((o=t)&&o.selector_converter?o.selector_converter:_(i)?_(i):function(){return x(i,s)}).call(c,s,o));if(n){var r=n.name||d.DOM.uniqueId();return h.formatter.register(r,n),y.extend({},v.settings.itemDefaults,{text:n.title,format:r})}}var i,c,s,o,u,l,a,f,m,g;return null};u(h)||v.items().remove(),y.each(f(h,e.doc||h.getDoc(),a(l(h))),function(n){if(-1===n.indexOf(".mce-")&&(!c||c(n))){var e=(r=s,i=n,y.grep(r,function(e){return!e.filter||e.filter(i)}));if(0<e.length)y.each(e,function(e){var t=o(n,e);t&&e.item.menu.push(t)});else{var t=o(n,null);t&&v.add(t)}}var r,i}),y.each(s,function(e){0<e.item.menu.length&&v.add(e.item)}),e.control.renderNew()})},s=function(t){return{convertSelectorToFormat:function(e){return c(t,e)}}};e.add("importcss",function(e){return t(e),s(e)})}();
+/**
+ * Copyright (c) Tiny Technologies, Inc. All rights reserved.
+ * Licensed under the LGPL or a commercial license.
+ * For LGPL see License.txt in the project root for license information.
+ * For commercial licenses see https://www.tiny.cloud/
+ *
+ * Version: 5.10.2 (2021-11-17)
+ */
+!function(){"use strict";function t(n){return function(t){return r=typeof(e=t),(null===e?"null":"object"==r&&(Array.prototype.isPrototypeOf(e)||e.constructor&&"Array"===e.constructor.name)?"array":"object"==r&&(String.prototype.isPrototypeOf(e)||e.constructor&&"String"===e.constructor.name)?"string":r)===n;var e,r}}function y(t){return t.getParam("importcss_selector_converter")}function u(e){return l(e)?function(t){return-1!==t.indexOf(e)}:e instanceof RegExp?function(t){return e.test(t)}:e}function h(t,e){var r,n=/^(?:([a-z0-9\-_]+))?(\.[a-z0-9_\-\.]+)$/i.exec(e);if(n){var o=n[1],i=n[2].substr(1).split(".").join(" "),c=x.makeMap("a,img");return n[1]?(r={title:e},t.schema.getTextBlockElements()[o]?r.block=o:t.schema.getBlockElements()[o]||c[o.toLowerCase()]?r.selector=o:r.inline=o):n[2]&&(r={inline:"span",title:e.substr(1),classes:i}),!1!==t.getParam("importcss_merge_classes")?r.classes=i:r.attributes={class:i},r}}function d(t,e){return null===e||!1!==t.getParam("importcss_exclusive")}function r(v){v.on("init",function(){function o(t,e){if(f=t,p=g,!(d(v,m=e)?f in p:f in m.selectors)){a=t,l=g,d(v,u=e)?l[a]=!0:u.selectors[a]=!0;var r=(i=(o=v).plugins.importcss,c=t,((s=e)&&s.selector_converter?s.selector_converter:y(o)?y(o):function(){return h(o,c)}).call(i,c,s));if(r){var n=r.name||_.DOM.uniqueId();return v.formatter.register(n,r),{title:r.title,format:n}}}var o,i,c,s,a,u,l,f,m,p;return null}var e,r,n,t,i=(e=[],r=[],n={},{addItemToGroup:function(t,e){n[t]?n[t].push(e):(r.push(t),n[t]=[e])},addItem:function(t){e.push(t)},toFormats:function(){return function(t){for(var e=[],r=0,n=t.length;r<n;++r){if(!f(t[r]))throw new Error("Arr.flatten item "+r+" was not an array, input: "+t);P.apply(e,t[r])}return e}(function(t,e){for(var r=t.length,n=new Array(r),o=0;o<r;o++){var i=t[o];n[o]=e(i,o)}return n}(r,function(t){var e=n[t];return 0===e.length?[]:[{title:t,items:e}]})).concat(e)}}),g={},c=u(v.getParam("importcss_selector_filter")),s=(t=v.getParam("importcss_groups"),x.map(t,function(t){return x.extend({},t,{original:t,selectors:{},filter:u(t.filter)})}));x.each(function(c,t,s){var a=[],r={},u=function(t,e){var r,n,o=n=t.href,i=p.cacheSuffix;if((n=o=l(o)?o.replace("?"+i,"").replace("&"+i,""):o)&&s(n,e)&&!function(t,e){var r,n=!1!==(r=t.getParam("skin"))&&(r||"oxide");if(n){var o=t.getParam("skin_url"),i=o?t.documentBaseURI.toAbsolute(o):m.baseURL+"/skins/ui/"+n,c=m.baseURL+"/skins/content/";return e===i+"/content"+(t.inline?".inline":"")+".min.css"||-1!==e.indexOf(c)}}(c,n)){x.each(t.imports,function(t){u(t,!0)});try{r=t.cssRules||t.rules}catch(t){}x.each(r,function(t){t.styleSheet?u(t.styleSheet,!0):t.selectorText&&x.each(t.selectorText.split(","),function(t){a.push(x.trim(t))})})}};x.each(c.contentCSS,function(t){r[t]=!0}),s=s||function(t,e){return e||r[t]};try{x.each(t.styleSheets,function(t){u(t)})}catch(t){}return a}(v,v.getDoc(),u(v.getParam("importcss_file_filter"))),function(r){var t,e,n;T.test(r)||c&&!c(r)||(n=r,0<(t=x.grep(s,function(t){return!t.filter||t.filter(n)})).length?x.each(t,function(t){var e=o(r,t);e&&i.addItemToGroup(t.title,e)}):(e=o(r,null))&&i.addItem(e))});var a=i.toFormats();v.fire("addStyleModifications",{items:a,replace:!v.getParam("importcss_append")})})}var e=tinymce.util.Tools.resolve("tinymce.PluginManager"),l=t("string"),f=t("array"),_=tinymce.util.Tools.resolve("tinymce.dom.DOMUtils"),m=tinymce.util.Tools.resolve("tinymce.EditorManager"),p=tinymce.util.Tools.resolve("tinymce.Env"),x=tinymce.util.Tools.resolve("tinymce.util.Tools"),P=Array.prototype.push,T=/^\.(?:ephox|tiny-pageembed|mce)(?:[.-]+\w+)+$/;e.add("importcss",function(t){return r(t),e=t,{convertSelectorToFormat:function(t){return h(e,t)}};var e})}();