Start fixing sort NSObject
Add sort of NSObject before generating the script
Add sort function in NSWorld
Implements compare function and set parameter on which sort
Added the function to set the parameter on which sort
Implements compare function and added the attribute on which sort
Added import
Added functions to differentiate type of Entity
Reimplementation of methods to differentiate Relations
Fixed unique color selection

Fixed indent spaces and braches
Merge pull request #2 from luca-morreale/master

Reorder NS script element, enforce unique colours.