installation: Flask-SSO version upgrade

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
installation: bootstrap 3.2.0

* Upgrades bootstrap to 3.2.0.

* Upgrades typeahead.js to 0.10.2.

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>