reverting .gitignore todefault project setup
Removing YUI references
Removing further YUI references in HTML files
Revert "reverting .gitignore todefault project setup"

This reverts commit 6e48afc17fbff90e1b8371a5d9c9814de98b3f38.
Revert "Removing YUI references"

This reverts commit bc17f0949294b1b4b1b3c185ff0060ab372fe35f.
Revert "Removing further YUI references in HTML files"

This reverts commit 3ad8e23dc63960d0a0d87a3ee760fdec76452fbf.