Don't assume symmetric questionnaires #2354

We used to assume that questionnaire on Tables_W and Tables_S was
always same questionnaire. But this is not the case at least for
Austria. We know double-check if the survey is also the same, thus
allowing to create new questionnaires even on Tables_S
Reduce SQL queries for chart data #2358

Use ID instead of objects. And we grab data massively
 on a geoname basis for:

* Unofficial filter names
* Answer
* QuestionnaireUsage
* FilterGeonameUsage
Avoid duplicated evaluation of formula syntax #2358