Changes icon size (within the buttons) to improve clarity
Changes icon size (within the buttons) to improve clarity

Contributes to #43

senttech/Cura,bq/Ultimaker-Cura,Curahelper/Cura,totalretribution/Cura,derekhe/Cura,DeskboxBrazil/Cura,derekhe/Cura,hmflash/Cura,bq/Ultimaker-Cura,ynotstartups/Wanhao,ad1217/Cura,Curahelper/Cura,quillford/Cura,fieldOfView/Cura,DeskboxBrazil/Cura,fxtentacle/Cura,fxtentacle/Cura,fieldOfView/Cura,ynotstartups/Wanhao,ad1217/Cura,senttech/Cura,totalretribution/Cura,markwal/Cura,quillford/Cura,markwal/Cura,hmflash/Cura,lo0ol/Ultimaker-Cura,lo0ol/Ultimaker-Cura