#0 bugfix when button and input were in same message palceholder
#0 bugfix when button and input were in same message palceholder

- if the button and input are in same <p> or .pdforms-message-input, the validation didn't work as intended, since the message was removed immediately after inserting (because the button was validated aswell)
- pdForms.addMessage's comment has been expanded to notify the user there cannot be more than one input with validation rules within one messages placeholder (eg. <p> or .pdforms-messages-input), see the comment itself for more info

peckadesign/pdForms,peckadesign/pdForms