Sorry for the delay, I was not allowed to answer my own question within 8 hrs (lack of points) but Yes I got it working! Mavericks Mac OSX server is really easy to setup and use with Apache as front to Tomcat. (If you know how to....)
Now I have tomcat integrated so that php with url: localhost is handeled by Apache and jsp url: localhost/examples -> runs tomcat but doesnt show the port, it looks integrated.
How I did it?
1) Uncomment if neccessary the line in server.xml for tomcat located in opt/apache-tomcat-8.0.9/conf:
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
Restart the tomcat server
2) Edit the Apache config file located: /Library/Server/Web/Config/apache2/httpd_server_app.conf
This strange name and location is caused by Mac Server.app and was what caused most problems, since I did not realize they renamed and copied the httpd.conf file to a second location! I was all the time changing the wrong config file...
I added this text with a texteditor TextMate (The program can show hidden files, and ask for adminpass when changing the file)
The Default webpage in Mac.Server is located as below Document Root
<VirtualHost *:80>
ServerName localhost
DocumentRoot "/Library/Server/Web/Data/Sites/Default"
<Proxy *>
AddDefaultCharset Off
Order deny,allow
Allow from localhost
</Proxy>
ProxyPass /examples ajp://localhost:8009/examples/
ProxyPassReverse /examples ajp://localhost:8009/examples/
</VirtualHost>