added createUser, getUserByID, getUserByUsername
minor changes to databases
follow naming convention..
added test cases
HTML Pages for User Register, Login, New Resource
Merge pull request #10 from projectcs13/sprint2.db_api.create_and_get_user

Sprint2.db api.create and get user
Merge pull request #11 from projectcs13/Sprint2.Some_HTML_Files

HTML Pages for User Register, Login, New Resource
Improved the structure further. It makes more sense to keep Nitrogen and bootstrap as libraries in the website folder.
Ignore the nitrogen library because it is not supposed to be inside the repository
Merge branch 'develop' of ssh://github.com/projectcs13/sensor-cloud into sprint2.project_structure