Issue #1257342 by bbdata, Bevan, Dave Reid: Fixed single-value requir…

…ed term field did not properly validate.

added cascading selection patch

reduced runaway memory usage when tree is loaded, and made it so tree…

… knows what is minimized or not at load time

fixed code formatting and required field validation

fixed CSS issue and translation support

xhtml patch

removed deleted files

bugfix

bug fixes

merged in track list