update responses and forms from pytoxic

forms.yml

@@ -2,4 +2,8 @@ forms:
   signup_form:
     required_slots:
       email:
-      - type: from_text
+      - type: from_slot
+      first_name:
+      - type: from_slot
+      last_name:
+      - type: from_slot

responses.yml

@@ -1,4 +1,16 @@
 responses:
+  utter_bye:
+  - text: |
+      Goodbye!
+  utter_out_of_scope/other:
+  - text: |
+      I dont understand sorry!
+  utter_out_of_scope/non_english:
+  - text: |
+      I only speak English :(
+  utter_bot_challenge:
+  - text: |
+      I am a bot!
   utter_greet:
   - text: |
       Hello! How can I help you?
@@ -10,5 +22,4 @@ responses:
   utter_signedup:
   - text: |
       Check your inbox at {email} in order to finish signing up on Liberta Casa!
-       - text: |
       You're all set! Check your inbox at {email} to confirm your registration.