[iOS][Feature 51]How Do You Feel input page update Textbox

Feature 51: How you Feel? Input page, update textbox to "Enter How You Feel, separated by commas"

- Trello: https://trello.com/c/VZ9iwUJE/79-6-33-feature-plus-icon-in-bottom-right-to-link-to-how-i-feel
- Test Case (User story 2): https://docs.google.com/spreadsheets/d/1k-SLp2G9OQlW-h9w9bkLeQe8c1V6zcYMPhGF08GfvR8/edit#gid=866540701