deprecate: deprecate constructor (Throwable, String)

Close #81

Author: javier-godoy

src/main/java/com/flowingcode/vaadin/addons/errorwindow/ErrorWindow.java

@@ -102,7 +102,12 @@ public ErrorWindow(final Throwable cause, final ErrorWindowI18n i18n) {
    *
    * @param cause The cause of the error
    * @param errorMessage An optional error message
+   *
+   * @deprecated The error message specified with this constructor is only displayed when production
+   *             mode is false. Use {@link #ErrorWindow(Throwable, ErrorWindowI18n)} for specifying
+   *             both debug and production mode messages.
    */
+  @Deprecated
   public ErrorWindow(final Throwable cause, final String errorMessage) {
     this(cause, errorMessage, isProductionMode(), ErrorWindowI18n.createDefault());
   }

src/test/java/com/flowingcode/vaadin/addons/errorwindow/ErrorwindowDemo.java

@@ -60,18 +60,6 @@ public ErrorwindowDemo() {
               }
             });
 
-    Button throwErrorWithCustomMessage =
-        new Button(
-            "Throw Error with custom message",
-            ev -> {
-              try {
-                Integer.parseInt("asdf");
-              } catch (NumberFormatException e) {
-                ErrorWindow w = new ErrorWindow(e, "CUSTOM ERROR MESSAGE");
-                w.open();
-              }
-            });
-
     Button throwErrorWithCustomMessageAndCustomTexts =
         new Button(
             "Throw Error with custom message (custom labels)",
@@ -124,7 +112,6 @@ public ErrorwindowDemo() {
         errorButton,
         throwErrorWithoutErrorHandler,
         throwErrorWithCustomMessageAndCustomTexts,
-        throwErrorWithCustomMessage,
         throwErrori18nSupport);
 
     add(new Button("Navigation error", ev -> {