IVR: Custom DisplayNames for each option

[cruzccl]

DDIs now have a field that lets you set a DisplayName for incoming calls.

This feature aims to set a custom displayName when an IVR option is pressed, so that the user that receives the call knows what has the caller pressed.

Example:

"Press 1 for spanish, press 2 for english"

1 sets DisplayName to ES, 2 sets DisplayName to EN.