Adding form to mobile-version

[yohannesdagnachew]

Adding a form to mobile version:

1. Add a name field to accept up to 30 chars.
2. Make the email field accept only emails.
3. Message field accepts up to 500 chars.
4. Make all fields have placeholder text.
5. Make all fields have the correct type.
   6. A user cannot submit the form if one or more of the fields is empty.