Corrected an import in the student_school_type update module.

Prevent modification of key fields Only non-id-based entities are affected as id-based entities do not have any un-modificable fields.

Add a script to generate a kml file with all active GSoC participants Only the students, mentors, and organization admins that are 'active' are exported. Students that do not have a project are not exported. Reviewed-by: Sverre Rabbelier