JavaDoc added to classes, hashCode() override added

MeshModel/MeshModel.iml

...ain/java/cz/fidentis/analyst/mesh/core/MeshComponent.java

...ain/java/cz/fidentis/analyst/mesh/core/MeshComposite.java

...src/main/java/cz/fidentis/analyst/mesh/core/MeshEdge.java

...src/main/java/cz/fidentis/analyst/mesh/core/MeshFace.java

...rc/main/java/cz/fidentis/analyst/mesh/core/MeshFacet.java

...src/main/java/cz/fidentis/analyst/mesh/core/MeshLeaf.java

...rc/main/java/cz/fidentis/analyst/mesh/core/MeshModel.java

...rc/main/java/cz/fidentis/analyst/mesh/core/MeshPoint.java