#JC-1739 add test create draft by moving focus

[baranovRP]

• update rules of naming of test methods
  • remove number of a manual test case from a name of the test method
• add assertj lib for flexible and more readable assertions
• inject JavascriptExecutor for an execution of javascript's snippets
• add class with actions that can be performed on any page
  • add method for scroll to element (gives a confidence that element is visible);
  • add method for refresh page without usage the cache;
• add webElems, getters and method required to interact with drafts
  • scroll down and find draft counter message
  • set focus outside text field
  • reload and find content of draft
  • check presence of counter message
• add draft entity, add method lose focus;
• add steps to create drat by type text with default length;
• add test create draft by moving focus
• add Draft Test Suit to primary and regression pack