helpers: fix six string and text type

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
global: html entities import fixes

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
global: `has_key` to `in` operator fix

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
login: fix uid comparison with `None` value

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
travis: enabling apache version module

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>