Maven ArtifactId=jersey-quickstart-webapp seems to miss Dependency to javax.servlet

I go trough the Tutorial: [https://jersey.java.net/documentation/latest/getting-started.html#new-webapp](https://jersey.java.net/documentation/latest/getting-started.html#new-webapp)

After generating the WebApp project with Maven, and importing into Eclipse i have a similar error to : [http://stackoverflow.com/questions/22756153/the-superclass-javax-servlet-http-httpservlet-was-not-found-on-the-java-build](http://stackoverflow.com/questions/22756153/the-superclass-javax-servlet-http-httpservlet-was-not-found-on-the-java-build)

After adding javax.servlet to dependencies my errors disappeared.
See [http://stackoverflow.com/a/22756202/1528488](http://stackoverflow.com/a/22756202/1528488)

Is the javax.servlet missing in the Archetype?

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I also have the following Exceptions, do they also Warnings, are they to be expected? If yes can the Tutorial pls mention that?

Broken single-root rule: Only one element with a deploy path of "/" is allowed for a web project or an EAR project
Broken single-root rule: The output folder for a web project must be /WEB-INF/classes