Redesigned submission form
Set E-Mail account as empty be default if not specified
Check for E-Mail account ID existence before accessing a E-Mail account
Show E-Mail account drop box always in case it is not set

Earlier it was only shown new ticket post. It will help when tickets are
created without a E-Mail account. e.g. support form or auto-drafted
tickets
Removed unnecessary code
Moved inline CSS to style sheet
Merge pull request #155 from VarunAgw/submission-form

Redesigned submission form.