Berlin: Display values mapping for Terminbuchung / Barrierefreiheit

[johnjohndoe]

As far as I can see in Berlin there are the following values for the terminbuchung property:

• mit
• Mit
• mit_dritt
• moeglich
• moeglich_dritt
• ohne
• Ohne
• ohne_dritt

I suggest we map them to well to understand display values. What would be a good mapping?

[johnjohndoe]

The same can be done for the barrierefreiheit property. Here are the currently used values:

• empty string
• ja
• mit
• ohne