Description of problem: 
For the security subystem, the module-options are how parameters are passed to the underlying classes that implement security.  Ex. UserRoles authentication needs both 'user.properties' and 'role.properties' defined as separate module-options.  The current implementation loads all existing module-options as a single string instead of a map which is not very readable(Ex. the LDAP module has 12 such module mappings).  However writing new properties back does not work either. 

This works well in the console now.

Version-Release number of selected component (if applicable):


How reproducible:
Always.

Steps to Reproduce:
1. Use the AS7 console to add a Security Domain to the security subsystem and via Authentication add a 'Login Module' and 2 Module Option. Save. 
2. Using RHQ plugin if you browse the AS7 instance the Login Module is loaded correctly, but all Module Options are displayed as single string. 
3. Attempt to add a new property using same format that the other properties are in and hit save(Ex. [{username=test1},{username2=test2}]).
  
Actual results:
i)single string display
ii)updating new property fails with
{JBAS014653: Composite operation failed and was rolled back. Steps that failed:={Operation step-1=[JBAS014798: Validation failed for value, JBAS014746: code may not be null]}}, rolled-back=true 

Expected results:
i)better display
ii)update does not fail.

Additional info: