| emayili_emailer | Returns a function to send emails using the 'emayili' package. |
| is_logged_in | Display Shiny elements only if the user is logged in. |
| is_not_logged_in | Display Shiny elements only if the user is not logged in. |
| login_server | Login server module. |
| login_ui | Login UI elements. |
| logout_button | Logout button. |
| new_user_ui | UI for creating a new user account. |
| passwdInput | Password input textbox. |
| reset_password_ui | UI for resetting password. |
| use_login | JavaScript and CSS dependencies. |