erroneous_fields with field description

The erroneous_fields function returns all fields with its corresponding error messages.

A return-value looks like this:

{'Title': ['This field is required.']}

Using this function with a field having a description ends with a broken key:

{'Title The document title': ['This field is required.']}

This because the markup is as following:

<label class="horizontal">
        Title     
        <span class="formHelp">The document title</span>
</label>

Getting the text of the label-element will include the text of the span element too.

4teamwork / ftw.testbrowser