Updated the title for the default tiles layout.
Moved the home controller to a new package.
Moved the AjaxController to a new location. Added a method to query
the Mongo data store.  Then the results are added to the page.

The ajax.jsp page is also modified to display a bit of sample Mongo
fetched data.

Added necessary XML schema definition changes to the Spring configuration
file.  Added property place holder to load database properties outside the
configuration and the corresponding database.properties file.  Added the
mongo template and corresponding DB factory.  Added proxy based transaction
configuration.

Added a Dto marker interface for model objects.  Added a sample Part model
that is a Dto.

Added a repository for Mongo access that is automatically generated using
Spring Proxies and Spring Data during compile time.

Added Mongo, Spring Data, AspectJ dependencies (not used right now), cglib,
commons basic datasource, among other dependencies to the pom.xml.  Changed
the Java language compile version to 1.7 and upgraded the compiler plugin.
Added a sample json file to load a couple of very simple items to
the Mongo data store.  Added a readme file to give instructions
on doing a data import with Mongo.