initial pass at replacing date.js with moment.js
removed datejs files, updated picker and format to momentjs
Merge branch 'develop' into topic-moment

Conflicts:
	src/Calendar.js
	src/Fields/DateField.js
	src/Format.js
Updated to latest moment.js version (2.1.0).
Added moment.js to build script.
Adding datejs back in libraries for compatibility.
Added moment to define list.
Set "Unknown" to collapse by default. Added localization string for it as well.
Merge pull request #21 from Saleslogix/topic-moment

Topic moment