Show Id in PasswordDialog

[theseal]

It would be very useful if the id of a password was shown in PasswordDialog.
This comes in handy when you are configuration clients that should access specific passwords thought the API.

I know that the Id can be found if you do a search though the API, but it would be much easier if it was readable in the dialog.

We have patch PasswordDialog.java with the following code, but I'm not sure if its made correctly and deserves a PR:

--- PasswordDialog.java.orig	2016-11-10 14:38:16.292451289 +0100
+++ PasswordDialog.java	2016-11-10 16:09:25.840637845 +0100
@@ -65,6 +65,7 @@
     private final static TextMessages textMessages = GWT.create(TextMessages.class);
     private Password password;
     private TextField<String> nameTextBox;
+    private TextField<String> idTextBox;
     private TextField<String> usernameTextBox;
     private TextField<String> passwordTextBox;
     private TextHelperComboBox<TagData> tagsComboBox;
@@ -84,7 +85,7 @@
         this.setHeading(textMessages.password());
         this.setModal(true);
         this.setLayout(new AbsoluteLayout());
-        this.setSize(430, 415);
+        this.setSize(430, 443);
         this.setResizable(false);
         
         LabelField lblfldName = new LabelField(textMessages.title_());
@@ -227,7 +228,15 @@
         setButtonAlign(HorizontalAlignment.CENTER);
         addButton(saveButton);
         addButton(cancelButton);
-        
+
+        LabelField lblfldId = new LabelField("Id:");
+        add(lblfldId, new AbsoluteData(7, 339));
+
+        idTextBox = new TextField<String>();
+        idTextBox.setReadOnly(true);
+        add(idTextBox, new AbsoluteData(82, 339));
+        idTextBox.setSize("76px", "22px");
+
         doLoadTags();
     }
 
@@ -433,6 +442,9 @@
     private void setFields()
     {
         nameTextBox.setValue(password.getName());
+        if (password.getId() > 0) {
+            idTextBox.setValue(password.getId() + "");
+        }
         usernameTextBox.setValue(password.getUsername());
         tagsComboBox.setRawValue(password.getTagsAsString());
         notesTextArea.setValue(password.getNotes());