Kind of a hack on appending data to jump URL in redirect.  For
multiselects (value is an array) we insert a [value] suffix, like
&foo___bar[value]=123, but that's kind of inconvenient for things like
single select dropdowns.  So I've tweaked it such that we only add
[value] if the array has more than one item.  So, for instance a join in
dropdown mode will append &table___join=123, but a miltiselect with
multiple selections will append
table___join[value]=123&table___join[value]=456
Merge branch 'joomla3' of ssh://git@github.com/Fabrik/fabrik.git into joomla3