Code Cleanup, phase 1
Code Cleanup, phase 2
Remove call to _setContainerPagination

Removed the call to _setContainerPagination from _buildNode().
Since the call was removed, the orginal code in _setContainerPagination
was restored.
Remove call to _buildFileContainerForItem

Removedthe call to _buildFileContainerForItemfrom _buildNode().
Since the call was removed, theorginalcode in_setContainerPagination
was restored.
Remove return not in original _setContainerPagination
Code Cleanup, phase 3
Remove unused hooks and filters
Add element OriginalFilename

This element contain File->original_filename. There may be more than one.
Rename show.mods.php to show.cul-omeka-xml.php and fix.

Renamed the above file, and fixed the code.
Change name of OriginalFilename element

The name of the OriginalFilename element was changed to
OriginalFileLoadedIntoOmeka; this is a more accurate name,
since we are printing out the name of the file that was loaded
into Omeka. If we kept the old name OriginalFilename, it may be
misconstrued as the original picture file taken by the photographer
(usually a tiff), from which a JPEG is generated and loaded into
Omeka.
The function _buildOriginalFilenamesForItem was also renamed. The
new function name is _buildOriginalFilesLoadedIntoOmekaForItem
Add comment at top of XML file.

Add a comment at the top of the XML file that attempts to
describe the structure of the file.