Licensing: `CeresFE` contains files of unknown origin

[tamiko]

The following files:

• https://github.com/dealii/code-gallery/blob/master/CeresFE/support_code/config_in.h
• https://github.com/dealii/code-gallery/blob/master/CeresFE/support_code/ellipsoid_fit.h

have the following headers:

/*
 * config_in.h
 *
 *  Created on: Aug 17, 2015
 *      Author: antonermakov
 */

/*
 * ellipsoid_fit.h
 *
 *  Created on: Jul 24, 2015
 *      Author: antonermakov
 */

which does not appear to be the main author of the code gallery contribution.

[marcfehling]

@elstargazer -- ping