cleanup code
set test url http://test.chronozoomproject.org
added new class for search tests
added initialize and cleanup
added class SearchHelper
added class SearchHelper to HelperManager
added test for Timeline Search
ignored WelcomeScreenTests according to https://github.com/alterm4nn/ChronoZoom/issues/317
added test for timeline search
added test for exhibit search
Merge branch 'master' of https://github.com/alterm4nn/ChronoZoom
added test for artifact search
deleted unsued method CloseWelcomePopup
reject using navigationHelper in Tests
fix: create timeline
fix: create timeline
[Feature] Implemented editing of root timeline start and end dates. Minor updates of datepicker and forms.

Details:
1. Added support of editing start and end dates of root timeline.
2. Now end date is set to infinity in case if timeline's end date is infinity (9999).
3. Little update of forms (added prefix "I" for interface names).
fix: welcome popup
added deletion timeline by UI
Fixed issue with video CI type