Remove JavaScript language option from Script Editor in BPMN Editor.

[pefernan]

The BPMN editor properties panel provides a Script Editor component with a dropdown that allows choosing the language of the script. The list of languages includes JavaScript wich is not supported by the Process Engine, we should remove it from the editor.

The supported languages, so far are:

• Java
• MVEL
• Drools (Conditional Expressions only)
• FEEL (Conditional Expressions only)