Created the set of RSpec macros and custom matchers.
Cleaned up user account activation spec.
Cleaned up user registration spec removing duplicated code.
Refactored be_navigated_to matcher performing decomposition to separate files.
Implemented additional verification of target navigation pages.
Deleted duplicated specs from requests spec folder.
Created specs for 'user sign out' feature.
Completed specs for 'User sign out' feature.