ENYO-3375: I can fold or unfold all UI components palette window at once

*Request*
Can toggle all ui component items at once.

*Fix*
Make another drawer wrapping all ui components.

ENYO-3375: I can fold or unfold all UI components palette window at once.
Enyo-DCO-1.1-Signed-Off-By: SangHyun.Hong (sanghyun.hong@lgepartner.com)