Preserve type information in the AJAX requests

[jonaseberle]

We need to get bool/int/string/array in PHP to correctly save it as .yaml.

The HTTP transfer is encoded as multipart/form-data (because PHP does not understand JSON natively).

Currently that leads to only string/array.

Idea:
We could send a JSON string via multipart/form-data and json_decode() the whole thing once in PHP.

[PKuhlmay]

Couldn't we use application/json instead? With this, we could send booleans directly.