LPS-40142 Updated Vaadin to 7.2.6

Updates Vaadin to 7.2.6. 

Also adds the following Vaadin 7 dependencies:
*jsoup* - http://jsoup.org
*android-json* - http://developer.android.com/reference/org/json/JSONObject.html (renamed to json-vaadin so it does not interfere with json-java the portal is using since it comes after it in the classpath)