“Pen” icon by khaleel, “Excavator” icon by dsfrogg, “Photo Gallery” icon by misirlou, “Snowflake” icon by retinaicon, “Magnifying Glass” icon by Kokopako, “Brainstorm” icon by garrett.knoll, “Acorn” icon by GregSuj, “Diploma” icon by uberux & “Listen” icon by catalarem from the Noun Project.