Keep fixing user issues.

wise-webapp/src/main/java/com/wisemapping/model/Collaborator.java

@@ -97,7 +97,7 @@ public class Collaborator implements Serializable {
     }
 
 
-    public boolean equalCollab(@Nullable Collaborator that) {
+    public boolean identityEquality(@Nullable Collaborator that) {
         if (this == that) return true;
         if (that == null) return false;
 

wise-webapp/src/main/java/com/wisemapping/model/Mindmap.java

@@ -112,7 +112,7 @@ public class Mindmap {
     public Collaboration findCollaboration(@NotNull Collaborator collaborator) {
         Collaboration result = null;
         for (Collaboration collaboration : collaborations) {
-            if (collaboration.getCollaborator().equalCollab(collaborator)) {
+            if (collaboration.getCollaborator().identityEquality(collaborator)) {
                 result = collaboration;
                 break;
             }