[core, demo] added data service usage
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/java/com/wispy/demo/servlet/GuestbookServlet.java
	src/main/webapp/WEB-INF/web.xml
	src/main/webapp/guestbook.jsp
Merge remote-tracking branch 'origin/master'
[core, demo, mongo, cr] added demo page with card upload, added mongo support