Improve canteen custom slot

[mammuth]

Currently there are only a couple of canteens in the custom slot type.

• How does it behave if the user says "Mensa in Garching" instead of "Mensa Garching"?
• Currently canteens are determined by string comparison. Should be improved.

[mammuth]

Oha, just noticed that the value of the canteen slot can also be data that we not defined. Alexa seems to try to be smart and match the slot with the help of the matched utterance.

Example:
Utterance: GetMealsForMensa {Canteen}
Canteen slot values: mensa garching, garching
Request: Alexa, frage mensa münchen was es in garching gibt
--> canteen has the value "garching gibt" 😮

Related to the utterance improvement ticket #4

[mammuth]

How does it behave if the user says "Mensa in Garching" instead of "Mensa Garching"

There are now synonyms in the canteens.js for this.