ALF-1999: Refactored AuthorityService.findAuthorities to support search options required by Alfresco Explorer client in efficient manner

- optional parentAuthority argument - when set will only search for authorities under a given group
- optional immediate flag - when false means do a recursive search. When true means only return first level. When true and parentAuthority is null means root groups.
- search expression - which is tested against the short name and the display name
- reworked all existing calls for new semantics
- this method is for UI search only - not for existence checking!
  - removed some ill-informed calls


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@19203 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/bean/wcm/SetPermissionsDialog.java

@@ -286,9 +286,9 @@ public class SetPermissionsDialog extends UpdatePermissionsDialog
             else
             {
                 // groups - text search match on supplied name
-                String term = PermissionService.GROUP_PREFIX + "*" + contains.trim() + "*";
+                String term = "*" + contains.trim() + "*";
                 Set<String> groups;
-                groups = getAuthorityService().findAuthoritiesInZone(AuthorityType.GROUP, term, AuthorityService.ZONE_APP_DEFAULT);
+                groups = getAuthorityService().findAuthorities(AuthorityType.GROUP, null, false, term, AuthorityService.ZONE_APP_DEFAULT);
                 groups.addAll(getAuthorityService().getAllAuthorities(AuthorityType.EVERYONE));
 
                 String groupDisplayName;