added isAlertPresent method
Fix: new_timeline_should_have_a_title: script is broken
Deleted unused method
Fix: create exhibit
Fix: new_timeline_should_have_a_title: script is broken
Added: getregime() and setMode() unit tests
Doc: Getting started with Unit tests.md
Merge pull request #207 from a-chumagin/master

Fix UI tests + New documentation