4a hal creates conflicting index.html and install them in sdk

The javascript and the index.html conflict when multiple hal are installed.

We need changes.

1) The template must be changed to load those files in a subdirectory unique to the hal package.

2) this specific directory is only installed when a debug package is created.

claneys change the source template

claneys update exisiting 4a-hal-reference package (fix packaging, remove hack)

tjahnke update the exisiting 4a-hal-unicens package following Romain template update