don't send the OK int constant as entity

src/main/java/com/commafeed/frontend/rest/resources/AdminREST.java

@@ -138,7 +138,7 @@ public class AdminREST extends AbstractREST {
 			}
 
 		}
-		return Response.ok(Status.OK).entity("OK").build();
+		return Response.ok().build();
 
 	}
 

src/main/java/com/commafeed/frontend/rest/resources/CategoryREST.java

@@ -234,7 +234,7 @@ public class CategoryREST extends AbstractREST {
 			List<FeedSubscription> subs = feedSubscriptionDAO.findByCategories(getUser(), categories);
 			feedEntryService.markSubscriptionEntries(getUser(), subs, olderThan);
 		}
-		return Response.ok(Status.OK).build();
+		return Response.ok().build();
 	}
 
 	@Path("/add")
@@ -340,7 +340,7 @@ public class CategoryREST extends AbstractREST {
 
 		feedCategoryDAO.saveOrUpdate(category);
 		cache.invalidateUserRootCategory(getUser());
-		return Response.ok(Status.OK).build();
+		return Response.ok().build();
 	}
 
 	@POST
@@ -357,7 +357,7 @@ public class CategoryREST extends AbstractREST {
 		category.setCollapsed(req.isCollapse());
 		feedCategoryDAO.saveOrUpdate(category);
 		cache.invalidateUserRootCategory(getUser());
-		return Response.ok(Status.OK).build();
+		return Response.ok().build();
 	}
 
 	@GET

src/main/java/com/commafeed/frontend/rest/resources/EntryREST.java

@@ -4,7 +4,6 @@ import javax.inject.Inject;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
 import javax.ws.rs.core.Response;
-import javax.ws.rs.core.Response.Status;
 
 import com.commafeed.backend.dao.FeedEntryStatusDAO;
 import com.commafeed.backend.dao.FeedSubscriptionDAO;
@@ -42,7 +41,7 @@ public class EntryREST extends AbstractREST {
 		Preconditions.checkNotNull(req.getId());
 
 		feedEntryService.markEntry(getUser(), Long.valueOf(req.getId()), req.isRead());
-		return Response.ok(Status.OK).build();
+		return Response.ok().build();
 	}
 
 	@Path("/markMultiple")
@@ -56,7 +55,7 @@ public class EntryREST extends AbstractREST {
 			markFeedEntry(r);
 		}
 
-		return Response.ok(Status.OK).build();
+		return Response.ok().build();
 	}
 
 	@Path("/star")
@@ -69,7 +68,7 @@ public class EntryREST extends AbstractREST {
 
 		feedEntryService.starEntry(getUser(), Long.valueOf(req.getId()), req.getFeedId(), req.isStarred());
 
-		return Response.ok(Status.OK).build();
+		return Response.ok().build();
 	}
 
 }

src/main/java/com/commafeed/frontend/rest/resources/FeedREST.java

@@ -270,7 +270,7 @@ public class FeedREST extends AbstractREST {
 			Feed feed = sub.getFeed();
 			taskGiver.add(feed, true);
 		}
-		return Response.ok(Status.OK).build();
+		return Response.ok().build();
 	}
 
 	@Path("/refresh")
@@ -285,7 +285,7 @@ public class FeedREST extends AbstractREST {
 		if (sub != null) {
 			Feed feed = sub.getFeed();
 			taskGiver.add(feed, true);
-			return Response.ok(Status.OK).build();
+			return Response.ok().build();
 		}
 		return Response.ok(Status.NOT_FOUND).build();
 	}
@@ -303,7 +303,7 @@ public class FeedREST extends AbstractREST {
 		if (subscription != null) {
 			feedEntryService.markSubscriptionEntries(getUser(), Arrays.asList(subscription), olderThan);
 		}
-		return Response.ok(Status.OK).build();
+		return Response.ok().build();
 	}
 
 	@GET
@@ -376,7 +376,7 @@ public class FeedREST extends AbstractREST {
 			log.info("Failed to subscribe to URL {}: {}", url, e.getMessage());
 			return Response.status(Status.SERVICE_UNAVAILABLE).entity("Failed to subscribe to URL " + url + ": " + e.getMessage()).build();
 		}
-		return Response.ok(Status.OK).build();
+		return Response.ok().build();
 	}
 
 	@GET
@@ -414,7 +414,7 @@ public class FeedREST extends AbstractREST {
 
 		boolean deleted = feedSubscriptionService.unsubscribe(getUser(), req.getId());
 		if (deleted) {
-			return Response.ok(Status.OK).build();
+			return Response.ok().build();
 		} else {
 			return Response.status(Status.NOT_FOUND).build();
 		}
@@ -467,7 +467,7 @@ public class FeedREST extends AbstractREST {
 			feedSubscriptionDAO.saveOrUpdate(subscription);
 		}
 		cache.invalidateUserRootCategory(getUser());
-		return Response.ok(Status.OK).build();
+		return Response.ok().build();
 	}
 
 	@POST