feat(web) add config to hide login button on WaitForOwnerDialog

config.js

     //         collectionInterval?: number;
     //         logGetStats?: boolean;
     // },
+
+    // Hide login button on auth dialog, you may want to enable this if you are using JWT tokens to authenticate users
+    // hideLoginButton: true,
 };
 
 // Temporary backwards compatibility with old mobile clients.

lang/main-de.json

         "Share": "Teilen",
         "Submit": "OK",
         "WaitForHostMsg": "Die Konferenz wurde noch nicht gestartet. Falls Sie die Konferenz leiten, authentifizieren Sie sich bitte. Warten Sie andernfalls, bis die Konferenz gestartet wird.",
+        "WaitForHostNoAuthMsg": "Die Konferenz wurde noch nicht gestartet. Bitte warten Sie, bis die Konferenz gestartet wird.",
         "WaitingForHostButton": "Auf Moderation warten",
         "WaitingForHostTitle": "Warten auf den Beginn der Konferenz …",
         "Yes": "Ja",

lang/main-hu.json

         "Share": "Megosztás",
         "Submit": "Elküldés",
         "WaitForHostMsg": "A konferencia még nem kezdődött meg. Ha Ön a házigazda, akkor hitelesítse magát. Ellenkező esetben, kérjük várjon a házigazda érkezésére.",
+        "WaitForHostNoAuthMsg": "A konferencia még nem kezdődött el, mert nincs elérhető moderátor. Kérlek várj.",
         "WaitingForHost": "Várakozás a házigazdára…",
         "Yes": "Igen",
         "accessibilityLabel": {

lang/main-vi.json

         "Share": "Chia sẻ",
         "Submit": "Đăng ký",
         "WaitForHostMsg": "Cuộc họp chưa được bắt đầu. Nếu bạn là quản trị viên vui lòng xác thực. Nếu không, vui lòng đợi quản trị viên.",
+        "WaitingForHost": "Đang đợi quản trị viên...",
         "WaitingForHostButton": "Chờ người điều hành",
         "WaitingForHostTitle": "Chờ người điều hành ...",
         "Yes": "Có",

lang/main.json

         "Share": "Share",
         "Submit": "Submit",
         "WaitForHostMsg": "The conference has not yet started because no moderators have yet arrived. If you'd like to become a moderator please log-in. Otherwise, please wait.",
+        "WaitForHostNoAuthMsg": "The conference has not yet started because no moderators have yet arrived. Please wait.",
         "WaitingForHostButton": "Wait for moderator",
         "WaitingForHostTitle": "Waiting for a moderator...",
         "Yes": "Yes",

react/features/authentication/components/web/WaitForOwnerDialog.tsx

      */
     _alternativeCancelText?: boolean;
 
+    /**
+     * Whether to hide the login button.
+     */
+    _hideLoginButton?: boolean;
+
     /**
      * Redux store dispatch method.
      */
                         this.props._alternativeCancelText ? 'dialog.WaitingForHostButton' : 'dialog.Cancel' }}
                 disableBackdropClose = { true }
                 hideCloseButton = { true }
-                ok = {{ translationKey: 'dialog.IamHost' }}
+                ok = { this.props._hideLoginButton ? { hidden: true,
+                    disabled: true } : { translationKey: 'dialog.IamHost' } }
                 onCancel = { this._onCancelWaitForOwner }
                 onSubmit = { this._onIAmHost }
                 titleKey = { t('dialog.WaitingForHostTitle') }>
                 <span>
-                    { t('dialog.WaitForHostMsg') }
+                    { this.props._hideLoginButton ? t('dialog.WaitForHostNoAuthMsg') : t('dialog.WaitForHostMsg') }
                 </span>
             </Dialog>
         );
  */
 function mapStateToProps(state: IReduxState) {
     const { membersOnly, lobbyWaitingForHost } = state['features/base/conference'];
+    const { hideLoginButton } = state['features/base/config'];
 
     return {
-        _alternativeCancelText: membersOnly && lobbyWaitingForHost
+        _alternativeCancelText: membersOnly && lobbyWaitingForHost,
+        _hideLoginButton: hideLoginButton
     };
 }
 

react/features/base/config/configType.ts

     hideDominantSpeakerBadge?: boolean;
     hideEmailInSettings?: boolean;
     hideLobbyButton?: boolean;
+    hideLoginButton?: boolean;
     hideParticipantsStats?: boolean;
     hideRecordingLabel?: boolean;
     hosts?: {