tests: fixed tests due to PHP bug 62725

Related: https://github.com/nette/tester/issues/129
DomQuery: added support for HTML5 elements

List of elements: http://www.w3.org/TR/2014/CR-html5-20140429/index.html#elements-1
Merge pull request #132 from dg/pull-html5

DomQuery: added support for HTML5 elements
composer.json: requires iconv
typo