1.5 released

Use docJGenerator 1.4.17.5
Don't add in Ruby the stdlib directory if it does not exist
Allow to invoke directly a method in the wrapper
Add a getMIME() method for all script wrappers
The script can be created from a String content, added the notion of a Script source
Allow to manage properties and functions at the Javascript level in the JSScriptWrapper
Fix the error lines in Javascript being off by one
Fix the Javascript wrapper throwing an exception when installing the script if the script used global variables
Add two methods in each wrapper implementation allowing to know if the associated scripting library is available
Allow the framework to accept functions declaration at the Javascript level rather than only methods declaration