Remove the custom ARRAY type.

Was actually breaking the submission and use of functions described
in arrays... "Element Validate", "Process", "Pre Render", "Post Render",
"After Build", "Submit" and "Validate" under the "More Advanced Controls" bit
 should now work! Huzzah!
Merge pull request #103 from adam-vessey/7.x-remove-array-type

Remove the custom ARRAY type.