Add button for user settings and a change display name widget

src/controllers/atoms/UserSettingsButton.js

+/*
+Copyright 2015 OpenMarket Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+'use strict';
+
+var dis = require("../../dispatcher");
+
+module.exports = {
+    onClick: function() {
+        dis.dispatch({
+            action: 'view_user_settings'
+        });
+    },
+};

src/controllers/molecules/ChangeDisplayName.js

+/*
+Copyright 2015 OpenMarket Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+'use strict';
+
+var React = require('react');
+var MatrixClientPeg = require("../../MatrixClientPeg");
+
+module.exports = {
+    getDefaultProps: function() {
+        return {
+            onFinished: function() {},
+        };
+    },
+
+    getInitialState: function() {
+        return {
+            busy: false,
+            errorString: null
+        }
+    },
+
+    componentWillMount: function() {
+        var cli = MatrixClientPeg.get();
+        this.setState({busy: true});
+        var self = this;
+        cli.getProfileInfo(cli.credentials.userId).done(function(result) {
+            self.setState({
+                displayname: result.displayname,
+                busy: false
+            });
+        }, function(error) {
+            self.setState({
+                errorString: "Failed to fetch display name",
+                busy: false
+            });
+        });
+    },
+
+    changeDisplayname: function(new_displayname) {
+        var cli = MatrixClientPeg.get();
+
+        this.setState({
+            busy: true,
+            errorString: null,
+        })
+
+        var self = this;
+        MatrixClientPeg.get().setDisplayName(new_displayname).then(function() {
+            self.setState({busy: false});
+        }, function(error) {
+            self.setState({
+                busy: false,
+                errorString: "Failed to set display name"
+            });
+        });
+    },
+}