Prevent the user from sending an incomplete request to GMM/TM

From Administration > Register new profile, the user can upload an HL7 message profile and register it in GMM.

To do that, the user is requested to provide a set of information, however, no control is performed to check that the request is complete before sending it in GMM. This behaviour results in:
* An error on TM/GMM side
* A errorneous faces message displayed to the user.

Solution:

* When the Submit button is pushed, make sure all the fields are populated (only Order Message Control Code and Java package are optional and can remain empty)
* When the user selects a domain for which no actor is available => Display a warning instead of the drop-down list to tell the user that no actor is available in this domain
* When the user selects an actor for which no transaction is defined => Display a warning instead of the drop-down list to tell the user that no transaction is available in this domain
* If the request is incomplete when clicking on 'Submit' button, a faces message shall be displayed to the user to ask him to complete the missing fields