Reaction Time Updated

The Reaction Time widget now supports visual and audio stimulus from the one interface and random display of a number of stimuli - you can now select all four stimuli and the computer will pick a different one at random each go.

Still to do: translate the text into other languages (all text strings have been arranged so this is possible), make this into a Moodle module and integrate results into Moodle's database, sort out the horrible mangled mess of code that this has become (see the zip file if you don't believe me)...