Cannot insert images and figures inside my widget

I'm adapting wthis widget for my template.

I cannot configure the filter to accept images and figure inside my widget.

I'm handling image as widget with image2 plugin, but I don't need to have widget inside widget (I know that is not possible to nest widget): whan I insert an image i can lose the widget functionality.

I need just to create a template that accept images and figure! This is my plugin.

CKEDITOR.plugins.add( 'ddayblock', {

	requires: 'widget',
	icons: 'ddayblock',

	init: function( editor ) {
		// Register the editing dialog.
		CKEDITOR.dialog.add( 'ddayblock', this.path + 'dialogs/ddayblock.js' );

		// Register the ddayblock widget.
		editor.widgets.add( 'ddayblock', {
			allowedContent:
				'section figure div p[*]',

			requiredContent: 'section(balanced-spaced)',

			editables: {
				title: {
					selector: '.left',
					allowedContent: 'p br ul ol li strong figure img em'
				},
				content: {
					selector: '.right',
					allowedContent: 'p br ul ol li strong figure img em'
				}
			},

			template:
				'<section class="balanced-spaced indented-left">' +
					'<div class="left">Title</div>' +
					'<div class="right">Title</div>' +
				'</section>',

			button: 'Create a block',
			dialog: 'ddayblock',

			
			upcast: function( element ) {
				return element.name == 'section' && element.hasClass( 'balanced-spaced' );
			},

			init: function() {
				var width = this.element.getStyle( 'width' );
				if ( width )
					this.setData( 'width', width );

				if ( this.element.hasClass( 'align-left' ) )
					this.setData( 'align', 'left' );
				if ( this.element.hasClass( 'align-right' ) )
					this.setData( 'align', 'right' );
				if ( this.element.hasClass( 'align-center' ) )
					this.setData( 'align', 'center' );
			},

			data: function() {
				if ( this.data.width == '' )
					this.element.removeStyle( 'width' );
				else
					this.element.setStyle( 'width', this.data.width );

				// Brutally remove all align classes and set a new one if "align" widget data is set.
				this.element.removeClass( 'align-left' );
				this.element.removeClass( 'align-right' );
				this.element.removeClass( 'align-center' );
				if ( this.data.align )
					this.element.addClass( 'align-' + this.data.align );
			}
		} );
	}
} );