Bug 1047395 - Add a link to the release notes from the about page r=florian

browser/base/content/aboutDialog.css

@@ -37,6 +37,10 @@
   margin-right: 0;
 }
 
+#releasenotes {
+  margin-top: 10px;
+}
+
 #distribution,
 #distributionId {
   display: none;

browser/base/content/aboutDialog.xul

@@ -44,7 +44,13 @@
     <hbox id="clientBox">
       <vbox id="leftBox" flex="1"/>
       <vbox id="rightBox" flex="1">
+        <hbox align="baseline">
 #expand <label id="version">__MOZ_APP_VERSION_DISPLAY__</label>
+#ifndef NIGHTLY_BUILD
+#expand <label id="releasenotes" class="text-link" href="https://www.mozilla.org/firefox/__MOZ_APP_VERSION__/releasenotes/">&releaseNotes.link;</label>
+#endif
+        </hbox>
+
         <label id="distribution" class="text-blurb"/>
         <label id="distributionId" class="text-blurb"/>
 

browser/locales/en-US/chrome/browser/aboutDialog.dtd

@@ -46,6 +46,8 @@
 <!ENTITY helpus.getInvolvedLink     "get involved!">
 <!ENTITY helpus.end                 "">
 
+<!ENTITY releaseNotes.link   "What's new">
+
 <!-- LOCALIZATION NOTE (bottomLinks.license): This is a link title that links to about:license. -->
 <!ENTITY bottomLinks.license        "Licensing Information">