Correct NSA view display #2956
Add thematic filter relation on questionnaire usages, server side #2896
Add thematic filter relation on questionnaire usages, client side  #2896

Used thematics are defined by checking thematicFilter on used filters. Then filter questionnaire usages to display only usages that are related to a used thematic.
Optimise scroll on table filter view
Use redis.so as pre-installed by Travis
Start Redis on Travis