corrected the URL of jquery qunit CSS
Merge pull request #3365 from AndreSchwarzer/patch-1

corrected the URL of jquery qunit CSS
Merge branch 'master' into gh-pages
_initDataAttributes method has been updated to avoid memory leaks in jquery cache
Merge pull request #3371 from dimamarksman/memory-leaks

js: jquery memory leaks
Updated patch version for last merge.
Merge branch 'master' into gh-pages