Week 18 updates on QtWebKit stable branches (v2.1.x)

Starting next week we'll also have updates on QtWebKit-2.2.

Release Notes for qtwebkit-2.1.x-week18 - Changes since qtwebkit-2.1.x-week17
1 bugs, 3 commits

Bugs fixed / Tasks done:

• #52115: Flaky Test: fast/events/tabindex-focus-blur-all.html

Commits added or cherry-picked:

• 6b42f67: Flaky Test: fast/events/tabindex-focus-blur-all.html
  
• 0703ff9: Fix LayoutTests (Skipped list + expected results)
  
• 0e0dbbc: Fix more LayoutTests (expectation changes after 06e2e7d)