Places fix score and quality with autocomplete integration test

I'd prefere a small static function like that:
```c++
static size_t admin_score(const std::vector<navitia::georef::Admin*>& admins, const georef::GeoRef &georef) {
    for (const auto* admin: admins) {
        if (admin->level == 8) return georef.fl_admin.word_quality_list.at(admin->idx).score;
    }
    return 0;
}
```
and then, here
```c++
const size_t admin_score = admin_score(pt_data.stop_areas[it.first]->admin_list, georef);
```
(and removing current admin_score declaration)

(not tested, may not compile)