minor tweaks

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
rewrite ModelController

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
remove localStorage source since it is not implemented yet

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
add complete set of unit tests for ModelController

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
Merge remote-tracking branch 'enyojs/model-perf' into merge-branch