Searching for an entry on the web shouldn't take forever

src/main/java/org/jabref/gui/importer/ImportEntriesViewModel.java

@@ -80,6 +80,9 @@ public ImportEntriesViewModel(BackgroundTask<ParserResult> task,
             this.parserResult = parserResult;
             // fill in the list for the user, where one can select the entries to import
             entries.addAll(parserResult.getDatabase().getEntries());
+            if (entries.isEmpty()) {
+               task.updateMessage(Localization.lang("No entries corresponding to given query"));
+            }
         }).onFailure(ex -> {
             LOGGER.error("Error importing", ex);
             dialogService.showErrorDialogAndWait(ex);

src/main/java/org/jabref/gui/util/BackgroundTask.java

@@ -257,7 +257,7 @@ protected void updateProgress(double workDone, double max) {
         updateProgress(new BackgroundProgress(workDone, max));
     }
 
-    protected void updateMessage(String newMessage) {
+    public void updateMessage(String newMessage) {
         message.setValue(newMessage);
     }
 

src/main/resources/l10n/JabRef_en.properties

@@ -2508,3 +2508,5 @@ The\ %0s\ are\ the\ same.\ However,\ the\ order\ of\ field\ content\ differs=The
 Keep\ from\ import=Keep from import
 Keep\ merged=Keep merged
 Keep\ old\ entry=Keep old entry
+
+No\ entries\ corresponding\ to\ given\ query=No entries corresponding to given query