Multi-line setting for text challenges

[SingaporeClouds]

The default response for text challenges is a single line of text.

Extend the current text challenge to allow the creator to change the size of the text box provided to users. For example, the creator could change the size of the pop-up modal text box to be 5 lines in height rather than 1 line in height.

This feature will be used to ask participants to respond with 2 or 3 sentences for some challenges. For example: "Watch the linked to video and then answer the question(s)."

And in the modal popup box, "What were the 3 main things that you took away from this 5-minute video?"

Multiline text challenge responses should not be shown in the challenge view columns. There should instead be a link provided that would allow the event creator to view the responses in a popup. If the challenge is configured to allow participants to see each others' solutions, then the would see a link to a popup as well.