ADD: Mail delete
ADD: Eclipse code style: pack for static imports
UPD: Use standart error output divs
UPD: Abstracted web interactions
Implement short-circuit logic for emails locally in test env.
UPD: Implicit mail validity check
Testcases more verbose on server fail (with illegal charset)
UPD: Added formIndex for CSRF token parsing
ADD: MailManagemenetTests (currently only for mailAdd)