Don't auto submit and store geolocation in placeholder

Avoid race condition if focus is on From field and user wants to start typing
Revert "Switch to api.trnsprt.ch"

This reverts commit b7471149c83c4df5d4896eb6f9826af5992967ce.
Revert "Also use api.trnsprt.ch for AJAX requests"

This reverts commit eb5bfb90fc1b4eaad4b8e49761cc4a1c385902c5.