Allow override of Form attributes

[kmeirlaen]

We should support users altering / adding form attributes.
This includes things like onsubmit, and action parameters.

[kmeirlaen]

http://www.qcodo.com/forums/topic.php/2886#16128

[kmeirlaen]

deleting patch, it tries to solve the "autocomplete" problem, but we are looking for a SetCustomAttribute?() function within QFormBase

[alex94040]

Kristof - there's a small problem with the patch.

array_merge(): Argument #2 is not an array in includes\qcodo\_core\qform\QFormBase.class.php

$this->strFormAttributeArray = array_merge($this->strFormAttributeArray, $this->strCustomAttributeArray);

[kmeirlaen]

fixing problem with emptry array

[kmeirlaen]

thanks, fixed!

[alex94040]

This is ready to be checked in.

[alex94040]

(In [102]) Fixes #7: Allow override of Form attributes. Code by kmeirlaen, reviewed by alex94040.