Fix ordering to allow close button to be clicked.

The previous change that made the images laid out using absolute meant that the close button was layered below the sprite image, making it now clickable

src/components/sprite-selector-item/sprite-selector-item.jsx

@@ -26,13 +26,6 @@ const SpriteSelectorItem = props => (
         disable={props.dragging}
         id={`${props.name}-${contextMenuId}`}
     >
-        {(props.selected && props.onDeleteButtonClick) ? (
-            <CloseButton
-                className={styles.deleteButton}
-                size={CloseButton.SIZE_SMALL}
-                onClick={props.onDeleteButtonClick}
-            />
-        ) : null }
         {typeof props.number === 'undefined' ? null : (
             <div className={styles.number}>{props.number}</div>
         )}
@@ -53,6 +46,13 @@ const SpriteSelectorItem = props => (
                 <div className={styles.spriteDetails}>{props.details}</div>
             ) : null}
         </div>
+        {(props.selected && props.onDeleteButtonClick) ? (
+            <CloseButton
+                className={styles.deleteButton}
+                size={CloseButton.SIZE_SMALL}
+                onClick={props.onDeleteButtonClick}
+            />
+        ) : null }
         {props.onDuplicateButtonClick || props.onDeleteButtonClick || props.onExportButtonClick ? (
             <ContextMenu id={`${props.name}-${contextMenuId++}`}>
                 {props.onDuplicateButtonClick ? (