Add HACKING file
Remove unused jQuery file
Add missing licence header to js file
Add LICENSE to all distribution packages
Replace copy filter with grunt-condense task

Instead of using a custom processContent filter when
copying files over, to modify the stylesheet link tags,
use the more generic grunt-condense task which does the same
job more succinctly.
Add SDK-specific build
Add install tasks for wgt and sdk

Update the grunt-sdb task to the version which allows
uninstall to fail.

Add wgt-install and sdk-install tasks.