Fixed server alloc caching issue

Node Allocation list is stored locally but wouldn't update when a server is created. So sometimes you will try to create a server with an allocation already used.

src/main/java/fr/atlasworld/network/core/server/entities/PteroNode.java

@@ -75,7 +75,8 @@ private synchronized void initialize() {
     }
 
     public synchronized void sync() {
-        this.alloc = this.node.retrieveAllocations().execute();
+        this.node = this.application.retrieveNodeById(this.config.remoteIdentifier).execute();
+        this.alloc = this.node.retrieveAllocations().cache(false).execute();
         this.specifications.setAllocations(this.alloc.size());
     }
 

src/main/java/fr/atlasworld/network/core/server/entities/PteroServerCreationRequest.java

@@ -128,6 +128,7 @@ public FutureAction<NetworkServer> execute() {
                     selectedNode = this.findNode();
                 } catch (NoSuchNodeException e) {
                     future.fail(e);
+                    return;
                 }
             else {
                 if (!this.setNodeCanRunServer()) {