JS: Workaround for AMD vertex attribute issues

Signed-off-by: Matt Chudleigh <matt.chudleigh@ausenco.com>
Signed-off-by: Harvey Harrison <harvey.harrison@ausenco.com>
JS: Modified logarithmic depth buffer code to avoid clipping bugs

Signed-off-by: Matt Chudleigh <matt.chudleigh@ausenco.com>
Signed-off-by: Harvey Harrison <harvey.harrison@ausenco.com>
JS: remove some old-style keywords that were used in the parallel-processing demo

The functionality is being kept, just not the ability to set it until a better config
strategy is completed.

Signed-off-by: Harvey Harrison <harvey.harrison@ausenco.com>
JS: rename Keyword desc => description to make it match the @Output annotation

Signed-off-by: Harvey Harrison <harvey.harrison@ausenco.com>