add FileSetFiles even, if the fileset couldn't be found. The orderBy methods would raise some exceptions otherwise.
add FileSetFiles even, if the fileset couldn't be found. The orderBy methods would raise some exceptions otherwise.

Former-commit-id: 8f3997a2284f45aa5d9061b1b5a80f7b60f41ef8
triplei/concrete5-8,rikzuiderlicht/concrete5,mainio/concrete5,jaromirdalecky/concrete5,acliss19xx/concrete5,MrKarlDilkington/concrete5,concrete5/concrete5,jaromirdalecky/concrete5,mlocati/concrete5,a3020/concrete5,deek87/concrete5,haeflimi/concrete5,olsgreen/concrete5,mlocati/concrete5,KorvinSzanto/concrete5,biplobice/concrete5,haeflimi/concrete5,biplobice/concrete5,biplobice/concrete5,biplobice/concrete5,MrKarlDilkington/concrete5,haeflimi/concrete5,mlocati/concrete5,olsgreen/concrete5,acliss19xx/concrete5,deek87/concrete5,jaromirdalecky/concrete5,acliss19xx/concrete5,hissy/concrete5,deek87/concrete5,KorvinSzanto/concrete5,haeflimi/concrete5,concrete5/concrete5,hissy/concrete5,hissy/concrete5,hissy/concrete5,olsgreen/concrete5,mainio/concrete5,rikzuiderlicht/concrete5,jaromirdalecky/concrete5,mainio/concrete5,triplei/concrete5-8,a3020/concrete5,MrKarlDilkington/concrete5,triplei/concrete5-8,mlocati/concrete5,concrete5/concrete5,rikzuiderlicht/concrete5,deek87/concrete5,KorvinSzanto/concrete5,concrete5/concrete5