Add robots noindex to edit and share pages

client/homebrew/pages/sharePage/sharePage.jsx

@@ -2,6 +2,7 @@ const React = require('react');
 const createClass = require('create-react-class');
 const _ = require('lodash');
 const cx = require('classnames');
+const Meta = require('vitreum/meta');
 
 const Nav = require('naturalcrit/nav/nav.jsx');
 const Navbar = require('../../navbar/navbar.jsx');
@@ -45,6 +46,7 @@ const SharePage = createClass({
 
 	render : function(){
 		return <div className='sharePage page'>
+			<Meta name="robots" content="noindex" />
 			<Navbar>
 				<Nav.section>
 					<Nav.item className='brewTitle'>{this.props.brew.title}</Nav.item>