New class ContactCreationTests was added.

New class ContactCreationTests was added. New methods extracted from
main test method.
ContactData class was added.

ContactData class was added. Class created for filling Contact form.
Object of this class used in fillContactForm method.
New methods in TestBase class

New methods moved from ContactCreationTests class to TestBase class
TestBase class methods reordering.

TestBase class methods grouped accordance with tests, where they are
used.