Bump Kapua version to 1.0.4

Change-Id: Iffdf0beef20a4b5b5f3fea834946bd92dce2f87d
Signed-off-by: Claudio Mezzasalma <claudio.mezzasalma@eurotech.com>

navbar.php

diff --git a/navbar.php b/navbar.php
index f3d1c8a..206b087 100644
--- a/navbar.php
+++ b/navbar.php
@@ -10,6 +10,6 @@
 <div class="newsticker-container">
   <span class="newsticker-header">Latest News</span>
   <span class="marquee">
-    07/01/2019 - <a href="https://github.com/eclipse/kapua/releases/tag/1.0.3">Kapua 1.0.3 has been released!</a>
+    11/02/2019 - <a href="https://github.com/eclipse/kapua/releases/tag/1.0.4">Kapua 1.0.4 has been released!</a>
   </span>
 </div>
\ No newline at end of file