Aded a skeletal sign up page to investigate using 3rd party
authorization

Details
-------
Site will eventually use third party authorization such as linkedin,
facebook, google etc. so looked into these technologies

Ticket
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N/A
Merge remote-tracking branch 'origin/master'

Conflicts:
	webapp/src/main/webapp/WEB-INF/crowdguru-application-servlet.xml
	webapp/src/main/webapp/static/css/crowdguru.css