1) recalculate the offset, as ChromeDriver starts to follow the standard;
2) update screenshots;
3) correct the `click()` call with using coordinates, related to 1)
4) `sendkey()` with using key.modifier adjustment
5) add sleep
6) workaround for mastery failures
Replace the screenshot usage in framework test (#11547)
- Replace the GridDisabledTest screenshot usage
- Replace the screenshot tests in BasicCrudGridEditorRowTest
- Replace the screenshot tests in ComboboxVaadinIcons
- Replace the screenshot tests in ValoThemeUITest::accordions
- Added screenshotcomparetolerance to some screenshot test to make tests stable
* Updating Chrome version to 69
* Updating screenshots taken in Chrome 69
* Fixing screenshots
* Fixing screenshots
* Adding some wait commands to tests
* Fixing screenshots
* Revert: Fixing screenshots
* More screenshots
* - Adding wait commands to make sure the transitions end before screenshot
- Fixing a screenshot
* Correcting a mistake of using wait instead of sleep
* Fixing more screenshots
* Increasing the height of ContextMenu (Because of limitation of new Chrome 69 in terms of minimum window height, ContextMenu size can't be tested with a small height.)