The context menu is a standard way to expose operations of the clicked item to the user. They expect it to be there, and we can make use of it as a place to put more advanced operations in. The menu contains: * New Catalog * Delete Catalog * Rename Also removes the 'x' icon to delete a catalog from the right side of a row. This was just placed there temporarily until the context menu is there. It's too easy to accidentally delete catalogs with this.