Problem with CsValidator add-on

I added this add-on into my pom.xml but I don’t know the reason why I can’t use this in my touchkit application

Here is all screen shots which I provide to you guys.

This is the full information of Maven complie error:

[ERROR]
Failed to execute goal org.codehaus.mojo:gwt-maven-plugin:2.3.0-1:compile (default) on project demo: GWT Module com.vaadin.DefaultWidgetSet not found in project sources or resources. → [Help 1]

[ERROR]

[ERROR]
To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR]
Re-run Maven using the -X switch to enable full debug logging.
[ERROR]

[ERROR]
For more information about the errors and possible solutions, please read the following articles:
[ERROR]
[Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
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Thank for helping me

My first guess would be that you are using Vaadin 7 and the Vaadin 7 version of the Vaadin Maven plugin but you also use the GWT Maven plugin. The latest Vaadin plugin completely replaces the GWT plugin so you should remove the latter and use the corresponding goals of the Vaadin plugin. Also check that you don’t have extra references to an older GWT version in your POM - GWT is now included in Vaadin 7 - and make sure the add-on versions you are using are compatible with the Vaadin version you are using.

Can you please tell me what I have to change? This is my whole pom.xml
12809.xml (6 KB)