Upgrade React to 0.12

1. Rename React.renderComponent to React.render and use React.createFactory:
   was in 0.11:
   React.renderComponent(ReactClass(props), container)
   should be in 0.12:
   React.render(React.createFactory(ReactClass)(props), container)
2. Use displayName where possible - it will be used in console messages
3. Use either JSX or React.createFactory to render children components:
   JSX:
   var Child = React.createClass(...);
   render: function() {
       return <Child name={this.props.name} />;
   }
   JS:
   var Child = React.createClass(...);
   var factory = React.createFactory(Child);
   render: function() {
       return factory({name: this.props.name});
   }
4. Do not use transferPropsTo. Use explicit props object in JS code or spread operator in JSX:
   JS:
   render: function() {
       return childFactory(_.extend({}, this.props,
           {className: 'name ' + this.props.className});
   }
   or:
   render: function() {
       return React.createElement(Child, props);
   }
   JSX:
   render: function() {
       return <Child {...this.props} className={'name ' + this.props.className} />;
   }
5. Do not use this.props.key in React class - it is removed from props.
   was in 0.11:
   var Child = React.createClass({
       render: function() {
           return <div data-uid={this.props.key} />;
       }
   });
   ...
   var children = items.map(item => <Child key={item.uid} />);
   should be in 0.12:
   var Child = React.createClass({
       render: function() {
           return <div data-uid={this.props.uid} />;
       }
   });
   ...
   var children = items.map(item => <Child key={item.uid} uid={item.uid} />);