Merging changes from main jField and jForm classes in to our overrides.
Revert "Merging changes from main jField and jForm classes in to our overrides."

This reverts commit ec265cb8f5de1e83b88334beced19c9c08a98a3c.
Merge branch 'joomla3' of github.com:Fabrik/fabrik into joomla3
Fixing params issue on slider element