[NFC] Add display name for custom React components

This improves readability of "Components" tab from React Development Tools extension for Chrome

client/homebrew/editor/editor.jsx

@@ -26,6 +26,7 @@ const splice = function(str, index, inject){
 
 
 const Editor = createClass({
+	displayName : 'Editor',
 	getDefaultProps : function() {
 		return {
 			brew : {

client/homebrew/editor/metadataEditor/metadataEditor.jsx

@@ -8,6 +8,7 @@ const request = require('superagent');
 const SYSTEMS = ['5e', '4e', '3.5e', 'Pathfinder'];
 
 const MetadataEditor = createClass({
+	displayName : 'MetadataEditor',
 	getDefaultProps : function() {
 		return {
 			metadata : {

client/homebrew/editor/snippetbar/snippetbar.jsx

@@ -14,6 +14,7 @@ const execute = function(val, brew){
 };
 
 const Snippetbar = createClass({
+	displayName : 'SnippetBar',
 	getDefaultProps : function() {
 		return {
 			brew            : {},
@@ -103,6 +104,7 @@ module.exports = Snippetbar;
 
 
 const SnippetGroup = createClass({
+	displayName : 'SnippetGroup',
 	getDefaultProps : function() {
 		return {
 			brew           : {},