Remove ServerConfig; Add Signup logic class

- ServerConfig seems too specific to Vector, but we can always add it back later.
- Signup.js contains all the logic for determining what to show which was
  previously in UI components.

src/controllers/molecules/ServerConfig.js

@@ -1,67 +0,0 @@
-/*
-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");
-
-module.exports = {
-    propTypes: {
-        onHsUrlChanged: React.PropTypes.func,
-        onIsUrlChanged: React.PropTypes.func,
-        defaultHsUrl: React.PropTypes.string,
-        defaultIsUrl: React.PropTypes.string
-    },
-
-    getDefaultProps: function() {
-        return {
-            onHsUrlChanged: function() {},
-            onIsUrlChanged: function() {},
-            defaultHsUrl: 'https://matrix.org/',
-            defaultIsUrl: 'https://matrix.org/'
-        };
-    },
-
-    getInitialState: function() {
-        return {
-            hs_url: this.props.defaultHsUrl,
-            is_url: this.props.defaultIsUrl,
-            original_hs_url: this.props.defaultHsUrl,
-            original_is_url: this.props.defaultIsUrl,
-        }
-    },
-
-    hsChanged: function(ev) {
-        this.setState({hs_url: ev.target.value}, function() {
-            this.props.onHsUrlChanged(this.state.hs_url);
-        });
-    },
-
-    // XXX: horrible naming due to potential confusion between the word 'is' and the acronym 'IS'
-    isChanged: function(ev) {
-        this.setState({is_url: ev.target.value}, function() {
-            this.props.onIsUrlChanged(this.state.is_url);
-        });
-    },
-
-    getHsUrl: function() {
-        return this.state.hs_url;
-    },
-
-    getIsUrl: function() {
-        return this.state.is_url;
-    },
-};