basic working version with commonjs module loading.

just a simple commonjs resource resolver loading only from the
js dir in the apps assets folder.
cleaned up commonjs to allow use of activity global.

fixed require impl to allow "activity" global to be visible
to scripts loaded via require module loader. also moved alert
function into "io" module for now.
add more events and XHR implemenation
load modules from ext storage and err handling...

for when module scripts attempted to load with require() do not
exist in either of the locations.
remove err code and bump demo to 5-point touch
fix ViewSource Activity and rm old versions of...

activity classes.