Created a project and made the application runs on Google App Engine

 I want to resolve #1 in this commit that make the application runs on Google App Engine.
 Created a project including several modules to start to develop this application.
 And this application adopt multi layered architecture, and the each layer is placed in each module.
 The web layer module 'lasagna-italiana-war' was configured to run on Google App Engine.

 The project and the modules have pom.xml files and basic directory structures of maven. And index.jsp has be added to test.
 The application can be tested on 'devserver' which provided appengine-maven-plugin.
 To launch the 'devserver' and to access to its pages requires a few steps below:
- In the top directory, execute a command 'mvn clean install' to compile, package and install the application into your system.
- Then move to a directory 'lasagna-italiana-war' and execute a command 'mvn appengine:devserver' to launch the devserver
- At the end, access to a url 'http://localhost:8080/' with your web browser (ex. Google Chrome)

In addition, .gitkeep files have put into each empty directory to commit the directories into GIT, and .gitignore has be created to support development with Eclipse. Also IntelliJ IDEA maybe supported.