Disabled SASS compilation during build and removed SASS directory

Fixes #94
Merge pull request #99 from superstructor/feature/94

Disabled SASS compilation during build and removed SASS directory
JSDuck documentation generation fixes and improvements.

Revised JSDuck comments for consistency, clarity and correctness.
Fixed missing class level comment + global function leak issues that caused the Promise package to be skipped during documentation generation.
Updated copyright notice.
Updated generated JavaScript.
Updated generated documentation.
Re-extracted compile and docs targets in build.xml.
Merge branch 'master' of github.com:deftjs/DeftJS

Conflicts:
	packages/deft/build.xml
Removed (outdated) JSDuck.exe from the repository.
Restored copyright notice prepending from the old build process to the new Sencha Cmd based build process.

Fixes #92
Tweak to sencha.cfg to ensure custom properties aren't trampled by future Sencha Cmd upgrades.
Changed 'creator' value in package.json.

Fixes #95