Doc: Updated "Layout Examples" page.

-added link from "Qt Examples and Tutorials"
-edited paragraphs and links

Task-number: QTBUG-33597
Change-Id: I06ed1234e16be523bb70a13960e1e5a609882a2e
Reviewed-by: Martin Smith <martin.smith@digia.com>
Doc: Edited section about loading QML files.

-focus should be on Qt Creator, not qmlscene.

Change-Id: Iea2c958aaa3457f5040c77c5e2cc1a8367ff82dc
Reviewed-by: Martin Smith <martin.smith@digia.com>
Merge remote-tracking branch 'origin/stable' into 5.3

Change-Id: Iefe01912d41638b88f64543d63107f6dcec97366