ref(strophe): Remove and cleanup all strophe related code.

Everything strophe related is now handled in lib-jitsi-meet project.

app.js

 import 'jquery';
 import 'jquery-contextmenu';
 import 'jquery-ui';
-import 'strophe';
-import 'strophe-disco';
 import 'jQuery-Impromptu';
 import 'autosize';
 

package.json

     "jwt-decode": "2.2.0",
     "lib-jitsi-meet": "jitsi/lib-jitsi-meet",
     "lodash": "4.17.4",
+    "js-md5": "0.6.1",
     "nuclear-js": "1.4.0",
     "postis": "2.2.0",
     "prop-types": "15.6.0",
     "react-redux": "5.0.6",
     "redux": "3.7.2",
     "redux-thunk": "2.2.0",
-    "strophe": "1.2.4",
-    "strophejs-plugins": "0.0.7",
     "styled-components": "1.3.0",
     "url-polyfill": "github:github/url-polyfill",
     "uuid": "3.1.0",
     "aui-experimental": "@atlassian/aui/lib/js/aui-experimental.js",
     "aui-experimental-css": "./node_modules/@atlassian/aui/dist/aui/css/aui-experimental.min.css",
     "autosize": "./node_modules/autosize/build/jquery.autosize.js",
-    "jQuery-Impromptu": "jQuery-Impromptu/src/jquery-impromptu.js",
-    "strophe-disco": "./node_modules/strophejs-plugins/disco/strophe.disco.js"
+    "jQuery-Impromptu": "jQuery-Impromptu/src/jquery-impromptu.js"
   }
 }

react/features/base/lib-jitsi-meet/_.native.js

 import './native';
 
-// The library lib-jitsi-meet (externally) depends on the libraries jQuery and
-// Strophe
+// The library lib-jitsi-meet (externally) depends on the libraries jQuery
 (global => {
     // jQuery
     if (typeof global.$ === 'undefined') {
         jQuery(global);
         global.$ = jQuery;
     }
-
-    // Strophe
-    if (typeof global.Strophe === 'undefined') {
-        require('strophe');
-        require('strophejs-plugins/disco/strophe.disco');
-        require('strophejs-plugins/caps/strophe.caps.jsonly');
-    }
 })(global || window || this); // eslint-disable-line no-invalid-this
 
 // Re-export JitsiMeetJS from the library lib-jitsi-meet to (the other features

react/features/base/lib-jitsi-meet/native/polyfills-browser.js

             document.cookie = '';
         }
 
-        // Document.querySelector
-        //
-        // Required by:
-        // - strophejs-plugins/caps/strophe.caps.jsonly.js
-        const documentPrototype = Object.getPrototypeOf(document);
-
-        if (documentPrototype) {
-            if (typeof documentPrototype.querySelector === 'undefined') {
-                documentPrototype.querySelector = function(selectors) {
-                    return _querySelector(this.elementNode, selectors);
-                };
-            }
-        }
-
         // Element.querySelector
         //
         // Required by:
-        // - strophejs-plugins/caps/strophe.caps.jsonly.js
+        // - lib-jitsi-meet/modules/xmpp
         const elementPrototype
             = Object.getPrototypeOf(document.documentElement);
 
         // FIXME There is a weird infinite loop related to console.log and
         // Document and/or Element at the time of this writing. Work around it
         // by patching Node and/or overriding console.log.
+        const documentPrototype = Object.getPrototypeOf(document);
         const nodePrototype
             = _getCommonPrototype(documentPrototype, elementPrototype);
 

react/features/base/participants/functions.js

 // @flow
+import md5 from 'js-md5';
 
 import { toState } from '../redux';
 
 
 declare var config: Object;
 declare var interfaceConfig: Object;
-declare var MD5: Object;
 
 /**
  * Returns the URL of the image for the avatar of a specific participant.
         }
     }
 
-    return urlPrefix + MD5.hexdigest(key.trim().toLowerCase()) + urlSuffix;
+    return urlPrefix + md5.hex(key.trim().toLowerCase()) + urlSuffix;
 }
 
 /**

webpack.config.js

         minimize
     })
 ];
-const strophe = /\/node_modules\/strophe(js-plugins)?\/.*\.js$/;
 
 if (minimize) {
     // XXX Webpack's command line argument -p is not enough. Further
 
             loader: 'expose-loader?$!expose-loader?jQuery',
             test: /\/node_modules\/jquery\/.*\.js$/
-        }, {
-            // Disable AMD for the Strophe.js library or its imports will fail
-            // at runtime.
-
-            loader: 'imports-loader?define=>false&this=>window',
-            test: strophe
         }, {
             // Set scope to window for URL polyfill.
 
                 name: '[path][name].[ext]'
             },
             test: /\.(gif|png|svg)$/
-        } ],
-        noParse: [
-
-            // Do not parse the files of the Strophe.js library or at least
-            // parts of the properties of the Strophe global variable will be
-            // missing and strophejs-plugins will fail at runtime.
-            strophe
-        ]
+        } ]
     },
     node: {
         // Allow the use of the real filename of the module being executed. By