OTRS-Config-Item-Read-Only-Field

• Built for OTRS CE V6.0.x / Znuny LTS
• Read only definition field for Config Item
• This patch will extend Config Item definition to has Read Only field.

1. At Config Item definiton, add 'ReadOnly: 1' parameter.

   Example:

    	- Input:  
    		MaxLength: 100  
    		Size: 50  
    		Type: Text  
    		ReadOnly: 1  
    	Key: SerialNumber  
    	Name: Serial Number  
    	Searchable: 1