Fix default sorting of venues

[jmastr]

Our data in the .json files comes perfectly sorted:

cat ./qml/pages/GastroLocations.json | python -m json.tool | grep '"name"' |grep 'attis' -A1 -B1
        "name": "Attila Hildmann Vegan Food",
        "name": "attis Espresso Caf\u00e9",
        "name": "Auf die Hand",

but our app changes this behaviour and distinguishes between upper and lower case as shown in the picture:

This can be reproduced, if accessing the location is disallowed.

[jmastr]

First guess is that this line:

./src/VenueModel.cpp:154:        QJSValueIterator array(item);

changes the order, which is fine in item.

[jmastr]

I was mistaken. Data is corrupted in .json:

cat GastroLocations.json | python -m json.tool | grep '"name"' |grep 'attis' -A1 -B1
        "name": "Zur Gerichtslaube",
        "name": "attis Espresso Caf\u00e9",
        "name": "bekech",

Probably due to our new backend. Closing...