installation: Flask-DebugToolbar Python 3 friendly

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
script: Python 3 compatibility fixes

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
global: six iteritems usage

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
global: exception syntax fix for Python 3

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
global: print function usage
global: os mask fixes

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
global: import fixes
global: urlparse import fix
global: six string_types usage

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
i18n: Babel usage

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