BHV-698: Guard against null/undefined and non-strings.
DCO-1.1-Signed-Off-By: Kevin Schaaf <kevin.schaaf@lge.com>
typeof(inString) will never return "null"; need to check inString === null instead.

Enyo-DCO-1.1-Signed-Off-By: Gray Norton (gray.norton@lge.com)
Making the right fix this time.

Enyo-DCO-1.1-Signed-Off-By: Gray Norton (gray.norton@lge.com)
BHV-698: Simplify null/undefined check.
DCO-1.1-Signed-Off-By: Kevin Schaaf <kevin.schaaf@lge.com>
Merge pull request #690 from enyojs/BHV-698-kevinpschaaf-master

BHV-698: Guard against null/undefined and non-strings.
ENYO-3891: Allow for horizontal scrolling from mousewheel event

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Merge pull request #691 from enyojs/ENYO-3891-aarontam

ENYO-3891: Allow for horizontal scrolling from mousewheel event

Reviewed-By: Ben Combee (ben.combee@lge.com)