ZF-3330: Zend_View_Helper_HeadTitle duplicates __toString() method from parent class


There's probably no need to keep identical __toString() methods in Zend_View_Helper_HeadTitle and its parent Zend_View_Helper_Placeholder_Container_Standalone classes:

public function __toString()
    return $this->toString();

Zend_View_Helper_HeadTitle::__toString() can be removed.


Scheduling for next mini release and assigning to Ralph.

Fixed with r12177

Changing issues in preparation for the 1.7.0 release.