Use old url validation

src/browser/components/NewTeamModal.jsx

@@ -1,6 +1,5 @@
 const React = require('react');
 const {Modal, Button, FormGroup, FormControl, ControlLabel, HelpBlock} = require('react-bootstrap');
-const validUrl = require('valid-url');
 
 class NewTeamModal extends React.Component {
   constructor() {
@@ -51,7 +50,7 @@ class NewTeamModal extends React.Component {
     if (this.state.teamUrl.length === 0) {
       return 'URL is required.';
     }
-    if (!validUrl.isUri(this.state.teamUrl)) {
+    if (!(/^https?:\/\/.*/).test(this.state.teamUrl.trim())) {
       return 'URL should start with http:// or https://.';
     }
     return null;

src/package.json

@@ -24,7 +24,6 @@
     "react-addons-css-transition-group": "^15.4.1",
     "react-bootstrap": "~0.30.7",
     "react-dom": "^15.4.1",
-    "valid-url": "^1.0.9",
     "yargs": "^3.32.0"
   }
 }