Adjust tootip text for php code field.
Fix label / tooltip for this list's related data

Provide language strings for Related Data fields on the Admin List /
Data / Related Data tab.
Fix for join element not showing labels for default value(s) if the
element is read only.
"Fix" for issue with Add/Remove Group tooltip's wrapping when close to
the edge of the screen, and obscuring the buttons.  Put a &nbsp; in the
language.  But only did en-GB.
Fixing simple file upload (ROB - NEED TO FIX IT PROPERLY), plus first
cut at slideshow display option.
Merge pull request #810 from Sophist-UK/fix_list_data_related_desc_label

Fix label / tooltip for this list's related data
Merge pull request #807 from Sophist-UK/fix_validation_php_tooltips

Adjust tootip text for php code field.