Migrated to python3, changed cloginrc parsing to accept cases with braces and quotes

Made code compatible with python3 because we get security warnings since python2 is EoL. Also changed the cloginrc parsing to parse the fields correctly for values in the cases listed below which could all be valid entries for cloginrc as far as I can judge:

admin
{admin}
"admin"
{"admin"}
"adm\"in"
{"adm\"in"}