ENYO-3354: Add the "None" element to the Android Max API picker

This element is added only for the the Max API Picker, so a refactoring was done by splitting the "Phonegap.ProjectProperties.SDKVersion" into two Kinds: one for the min API version and the other for the max API version.

Link to the JIRA ticket: https://enyojs.atlassian.net/browse/ENYO-3354

Ready for review.

Tested on Chrome(Windows 7)
Enyo-DCO-1.1-Signed-off-by: Rafik Adiche mahmoud-rafik.adiche@hp.com