Migrate to maven project (Fixed #110)

.gitignore

.idea/encodings.xml

.idea/misc.xml

.idea/sqldialects.xml

PlayWall/PlayWall.iml

PlayWall/build.xml

PlayWall/pom.xml

PlayWall/src/de/tobias/playpad/PlayPadImpl.java

...ction/actions/cart/handler/CartActionHandlerFactory.scala

PlayWall/src/main/java/META-INF/MANIFEST.MF

...l/src/main/java/de/tobias/playpad/AppUserInfoStrings.java

PlayWall/src/main/java/de/tobias/playpad/PlayPadImpl.java

PlayWall/src/main/java/de/tobias/playpad/PlayPadMain.java

PlayWall/src/main/java/de/tobias/playpad/PseudoClasses.java

...c/main/java/de/tobias/playpad/RegistryCollectionImpl.java

PlayWall/src/main/java/de/tobias/playpad/Strings.java

PlayWall/src/main/java/de/tobias/playpad/VersionUpdater.java

.../src/main/java/de/tobias/playpad/action/MappingUtils.java

...java/de/tobias/playpad/action/actions/NavigateAction.java

...ain/java/de/tobias/playpad/action/actions/PageAction.java