In order to avoid a YUI 3 version conflict between ICEface ace components and Liferay 6 (which uses YUI also), we need to remove our dependency on YUI 3. Since most new ace: components are leveraging jQuery and other JS libraries going forward, this seems technically feasible.

Pending review, the following ace: components will need to made to work exclusively with YUI 2.8:

- ace:tabSet (and sub components)
- ace:pushButton
- ace:linkButton
- ace:checkboxButton
- ace:contextMenu (?)

As part of this change, we also need to completely remove the usage of the YUI 3 loader (and YUI loader in general). Instead, we will have each component list their specific YUI dependencies like the ICEfaces 2.0 approach.

Ultimately, we want to distribute a reduce YUI 2.8 library that only contains the functions we require in a single file by leveraging the ACE generator's capability for merging js files.