Automatically set focus into input box when editing a value

Change-Id: I7e04e3a002ba834fe3583f24effd1db2633a06b5
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
diff --git a/src/main/java/com/googlesource/gerrit/plugins/serviceuser/client/EditableValue.java b/src/main/java/com/googlesource/gerrit/plugins/serviceuser/client/EditableValue.java
index d48b327..4e4a79a 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/serviceuser/client/EditableValue.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/serviceuser/client/EditableValue.java
@@ -60,6 +60,7 @@
         label.setVisible(false);
         edit.setVisible(false);
         input.setVisible(true);
+        input.setFocus(true);
         save.setVisible(true);
         if (warning != null) {
           warning.setVisible(true);