Show the approval rights for a project in the project admin screen

This way its clear what rights have been granted out on this project
to any existing groups.

If the right isn't given to the magic wildcard project then the right
can be deleted from the project.  Wildcard rights must be managed by
the site administrators only, and may initially only be available from
within the raw database.

Signed-off-by: Shawn O. Pearce <sop@google.com>

appjar/src/main/java/com/google/gerrit/client/reviewdb/ProjectRight.java

@@ -50,6 +50,10 @@ public final class ProjectRight {
       return projectId;
     }
 
+    public Project.Id getProjectId() {
+      return projectId;
+    }
+
     @Override
     public com.google.gwtorm.client.Key<?>[] members() {
       return new com.google.gwtorm.client.Key<?>[] {categoryId, groupId};
@@ -76,6 +80,18 @@ public final class ProjectRight {
     return key;
   }
 
+  public Project.Id getProjectId() {
+    return key.projectId;
+  }
+
+  public ApprovalCategory.Id getApprovalCategoryId() {
+    return key.categoryId;
+  }
+
+  public AccountGroup.Id getAccountGroupId() {
+    return key.groupId;
+  }
+
   public short getMinValue() {
     return minValue;
   }