Use JSON call to get the help topic

Also upped the z-index of ui-dialog because help text fell behind admin
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Merge pull request #197 from ddrury/HelpViaJSON

Use JSON call to get the help topic
Update .PO files to match recent change to translatable text
nl.po update/improve relationships.
Update hr.po
Updated HE/FI/SV translation by Meliza
Broken HTML in help text translations
Error in Dutch language file.
WIP