* Refactor isCompleteFormButtonDisabled method
- Change the isCompleteFormButtonDisabled() method structure as per the Code Style E2E 03-01
- Replace the isCompleteFormButtonDisabled() with isCompleteFormButtonEnabled() in the tests
- Add lists with the default tasks and process filters name in order to use a variable instead of a string (ADW eg. in the breadcrumb checks)
* Add visibility wait in isCompleteFormButtonEnabled method
* Refactor isProcessListDisplayed method
- Change the isProcessListDisplayed() method structure as per the Code Style E2E 03-01
- Replace the checkProcessListIsDisplayed() with isProcessListDisplayed() in the tests
* Fix isCompleteFormButtonEnabled and isCancelButtonEnabled methods
* Fix isCompleteFormButtonEnabled method
* Create separate method to check for Complete button visibility
* fix tslint