Merge pull request #3 from robwblack/add-header

Add header
Fixing main, index, and some css stuff.
A few more view/css changes
adding sensors view
Adding sensors tab
Adding devices page.
removal of file
Adding Device Agents Page
Adding Sensor Types Page.
Adding Device Types page.
Remove ApplicationTest and format IntegrationTest
Add SensorTest
Add Javadoc to Sensor
Move IntegrationTest to integration package
Remove old IntegrationTest
Parameterize types
Add DeviceTest to tests
Add comments to Device - fix interfaces
Remove ModelTester.java
Add DeviceTypeTest