creating necessary classes
[QAART-103] [DAR-112] second commit (tagged)
[QAART-103]
[QAART-103] [DAR-150]  first test case finished
[QAART-103] [DAR-150] adding to test Suite
small change
small change
[QAART-103] [DAR-150] adding tests where user posts different number of
replies
small change
Merge branch 'QAART-103' into DAR-sprint-6
DAR-153 Fixed issue with posting multiple forum replies in a row.
DAR-153 Moved notifications tests to a separate package.

We will be extracting notifications out of Forum and Wall so they should have
their own set of tests not necessarily tied to Forum and Wall.
Added empty WallPageObject class.
DAR-153 Added "NotificationsTest" test group.
DAR-153 Added openWallPage() method.
DAR-153 Added logging for openWallPage() method.
DAR-153 Added methods for starting a message wall discussion.
Selenium tests: overriding default config values with environment variables
Showing notifications by hovering a mouse instead of adding a class using JS
Adding method for checking the number of unread notifications