Fix exception in Frontend\Core\Engine\Theme::getPath.
Merge pull request #805 from pjezek/fix_template_exception_tagcloud

Fix exception in Frontend\Core\Engine\Theme::getPath.
Fix: avoid notice and incomplete exception when thrown.
Merge pull request #806 from pjezek/fix_avoid_notice_when_trow_an_exception

Fix: avoid notice and incomplete exception when thrown.
Save: readOuterXml was just called and stored in a variable.
Merge pull request #807 from pjezek/save_some_cpu_cycles

Save: readOuterXml was just called and stored in a variable.