Add silence calls around MenuItem create() to avoid sending messages during control creation -- that really slows down DatePicker and TimePicker control creation.

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@lge.com)
Merge pull request #155 from enyojs/speedup-onyx-menuitem

Add silence calls around MenuItem create() to avoid sending messages dur...