Fix error handling for Import Operation.

Remove some old icons

wise-webapp/src/main/java/com/wisemapping/rest/model/RestErrors.java

@@ -27,6 +27,10 @@ import java.util.*;
 public class RestErrors {
     @JsonIgnore
     private Errors errors;
+
+    @JsonIgnore
+    private List<String> globalErrors;
+
     @JsonIgnore
     MessageSource messageSource;
 
@@ -38,9 +42,14 @@ public class RestErrors {
 
         this.errors = errors;
         this.messageSource = messageSource;
+        this.globalErrors = this.processGlobalErrors(errors, messageSource);
     }
 
-    public List<String> getGlobalErrors() {
+    public RestErrors(@NotNull String errorMsg) {
+        globalErrors.add(errorMsg);
+    }
+
+    private List<String> processGlobalErrors(@NotNull Errors errors, @NotNull MessageSource messageSource) {
         final List<String> result = new ArrayList<String>();
         final List<ObjectError> globalErrors = errors.getGlobalErrors();
         for (ObjectError globalError : globalErrors) {
@@ -49,6 +58,10 @@ public class RestErrors {
         return result;
     }
 
+    public List<String> getGlobalErrors() {
+        return globalErrors;
+    }
+
     public void setGlobalErrors(List<String> list) {
         // Implemented only for XML serialization contract ...
     }