Specify new set of PoddActions, make PoddUser extend from RestletUtilUser
initial changes in user management/authorization with lots of
incomplete/unused code.
revert to using RestletUtilSesameRealm instead of a Realm object
Switch to use PoddSesameRealm and PoddUser which inherit from
restlet-util's RestletUtilSesameRealm and RestletUtilUser respectively.
override RestletUtilSesameRealm.java's getRoleByName() and
getRoleByUri() to enable using PoddRoles.java
minor changes to comments and organize imports
add helper class for debugging RDF repository contents
add work in progress for authorization of users based on Action and
optional object URIs
fix URI string for PROJECT_OBSERVER role
add working PoddSesameRealm.getCommonRolesForObjects() with tests
sort methods and minor cosmetic changes
modify Roles that can perform Actions
add authenticate condition for when action.isRoleRequired() returns
false
add an optional Collection of object URIs as a parameter to
AbstractPoddResourceImpl.checkAuthentication()
-reformat code
-remove unused debug methods
-set Freemarker's default encoding and URL escape charset to UTF-8
always pass a Collection of URIs when calling 
AbstractPoddResourceImpl.checkAuthentication()
fix freemarker variable user.identifier
change URL path for requesting user details to /user/{identifier}
change OTHER_USER_READ to not require object URIs
 - implement authorization in UserDetails
 - implement user info retrieval from repository
 - add support for a PoddUser to have organization, orcid and home page
attributes
 - partial display of Role info in UserDetails page