A patch from Nicolas Malin for "Send mail to a contact list, update screen for more user frendly" https://issues.apache.org/jira/browse/OFBIZ-5136

On marketing component when you will send a mail to a contactList, the screen is easy and effective but not really user-frendly. This screen is available on marketing/control/createContactListCommEvent

I improved :
 * force text/html by default on drop-down
 * set position 2 for content type
 * use advanced editor for content
 * labelise the communicationMethodType


git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1446875 13f79535-47bb-0310-9956-ffa450edef68