ENYO-2118:  replace zoom slider by a zoom picker
ENYO-2118: add auto zoom
Merge branch 'master' into ENYO-2118

Conflicts:
	deimos/source/designer/Designer.js
ENYO-2118: apply origin-transform to preview window
ENYO-2118: use kind rangeSlider instead of slider
ENYO-2118: fix jshint error
Merge pull request #709 from enyojs/ENYO-2118

ENYO-2118: add auto zoom to desiger view