Marble: Add credits for the GSoC 2012-2014
completed by: Sergey Popov
mentors: Dennis Nienhüser, shentey, Sanjiban Bairagya, Torsten Rahn
This is an easy task targeted at students starting with Marble development.
Currently Marble's about dialog only pays credits to the Google GSoC 2007 to 2011 students.
However the Marble project also had students in the years 2012-2014. Please research the SoCiS student names, e-mail address and the topic of their projects. Please add it to the about config dialog in a way that fits the previous entries (same wording, same formatting and in the correct order).