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!
Format the XML for exporting forms. @ruebot++
Merge pull request #104 from jordandukart/7.x

Format the XML for exporting forms. @ruebot++
Merge pull request #103 from adam-vessey/7.x-remove-array-type

Remove the custom ARRAY type.
Fix a strict warning... Need to pass a variable to array_pop().
Merge pull request #105 from adam-vessey/7.x-fix-strict-warning

Fix a strict warning... Need to pass a variable to array_pop().
Fix another warning.

Was assuming that something was always returned, resulting in a
strict warning...
Merge pull request #106 from adam-vessey/7.x-fix-strict-warning

Fix another warning.
Fix for https://jira.duraspace.org/browse/ISLANDORA-868
Fix for https://jira.duraspace.org/browse/ISLANDORA-895
Output better XML using cleanup_mods.xsl

Changes originially from Caitlin Nelson of FLVC.  Removes empty
attributes, empty elements, and elements containing only attributes
Merge pull request #108 from nigelgbanks/7.x-uncheck-checkboxes

Fix for https://jira.duraspace.org/browse/ISLANDORA-868
Merge pull request #107 from nigelgbanks/7.x-association-template

Fix for https://jira.duraspace.org/browse/ISLANDORA-895
Merge pull request #109 from lyrasis/enhance-cleanup_mods

Output better XML using cleanup_mods.xsl
Template is not guaranteed to be NULL when not specified, it may also be an
empty string.

Check for that case as well since we can't interpret it as valid XML in such a
case.
Prevent the use of CSS metacharacter in form element identifiers.
Merge pull request #111 from nigelgbanks/7.x-ISLANDORA-718

Prevent/Remove CSS metacharacters from form element identifiers.
Use object from factory instead of form state
Merge pull request #110 from nigelgbanks/7.x-fix-whitescreen-of-death

Fix white screen of death.
Merge pull request #112 from Islandora/7.x-fix-checksum-mods-error

Use object from factory instead of form state