Cleanup code

...in/java/de/tobias/playpad/server/json/JsonCollection.java

src/main/java/de/tobias/playpad/server/json/JsonName.java

src/main/java/de/tobias/playpad/server/json/JsonObj.java

src/main/java/de/tobias/playpad/server/json/JsonParent.java

src/main/scala/de/tobias/playpad/server/PlayPadServer.scala

...main/scala/de/tobias/playpad/server/account/Account.scala

...main/scala/de/tobias/playpad/server/account/Session.scala

...obias/playpad/server/json/DurationSerializerHandler.scala

...ain/scala/de/tobias/playpad/server/logger/LogFilter.scala

src/main/scala/de/tobias/playpad/server/plugin/Plugin.scala

src/main/scala/de/tobias/playpad/server/project/Design.scala

src/main/scala/de/tobias/playpad/server/project/Pad.scala

src/main/scala/de/tobias/playpad/server/project/Page.scala

src/main/scala/de/tobias/playpad/server/project/Path.scala

...main/scala/de/tobias/playpad/server/project/Project.scala

...bias/playpad/server/project/loader/sql/DesignLoader.scala

.../tobias/playpad/server/project/loader/sql/PadLoader.scala

...tobias/playpad/server/project/loader/sql/PageLoader.scala

...tobias/playpad/server/project/loader/sql/PathLoader.scala

...ias/playpad/server/project/loader/sql/ProjectLoader.scala