Apply automated code style fixes on project (exclude lang file and yui.js).
Code style on lang files.
Merge branch 't/11291'
Change walker.js documentation (text nodes are not split).
remove redundant code in sourcedialog plugin
Changelog entry.
Merge branch 't/11290'
Initial code style fixes.
Extract core of iframe autogrow algorithm to a separate function.
Cache scrollable element and marker in a closure and refresh on contentDom.
It didn't make any sense.
Not needed any more.
Don't check that twice in a row.
Minor simplification.
Don't need to pass arguments and return values any more.
Find config values once.
Cache document and marker container.
First compare fast accessible values.
Reset overflow-y style when maximizing, so scrollbar is restored.
Remove unnecessary functions.