[BUGFIX] Fix broken acceptance tests

Acceptance tests for Template module are fixed
- seems that element with #ts-overview is not rendered any more
  when showing table on installation root (pid 0)
- the correct id of the site root ("styleguide TCA demo") is #extdd-3
- fix scheduler tests after tooltip were added 
  (title => data-original-title)
- adapt tests after context menu refactoring

Resolves: #79771
Releases: master

Change-Id: I48879315b81267ae65ef92003c5034cbb62d576e
Reviewed-on: https://review.typo3.org/51648


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>