fixed not getting admin username password from property
Fixed AJAX URLs for puts.

There still is a problem with updates. Need to figure out the
JavaScript.
Merge branch 'develop' of https://github.com/wattdepot/wattdepot into develop
implemented get the latest and earliest measurement value, update SPA
to display these info
fixed SPA earlist sensor display
define earlist sensor data in wattdepot client js
add depository values API, fixed SPA data type and support interval
Merged master into develop.
UserGroup to Organization.
Darn Checkstyle.
Bumped version to 3.0.0-M6
Merge branch 'release-3.0.0-M6'
Merge branch 'master' of https://github.com/wattdepot/wattdepot