Cleaning up action names and compose drawer

app/assets/javascripts/components/components/button.jsx

@@ -1,12 +1,21 @@
+import PureRenderMixin from 'react-addons-pure-render-mixin';
+
 const Button = React.createClass({
+
   propTypes: {
     text: React.PropTypes.string.isRequired,
-    onClick: React.PropTypes.func
+    onClick: React.PropTypes.func,
+    disabled: React.PropTypes.boolean
   },
 
+  mixins: [PureRenderMixin],
+
   handleClick (e) {
     e.preventDefault();
-    this.props.onClick();
+
+    if (!this.props.disabled) {
+      this.props.onClick();
+    }
   },
 
   render () {