Release preparations for 2.1

Changelog update and version bump

src/CHANGELOG

+2.1
+ * Bug 27175: Add pref to allow users to persist custom noscript settings
+ * Bug 27760: Use new NoScript API for IPC and fix about:blank issue
+ * Bug 21263: Remove outdated information from the README
+
 2.0.7
  * Bug 27097: Tor News signup banner
  * Bug 27663: Add New Identity menuitem again

src/install.rdf

@@ -6,7 +6,7 @@
         <em:name>Torbutton</em:name>
         <em:creator>Mike Perry</em:creator>
         <em:id>torbutton@torproject.org</em:id>
-        <em:version>2.0.7</em:version>
+        <em:version>2.1</em:version>
         <em:multiprocessCompatible>true</em:multiprocessCompatible>
         <em:homepageURL>https://www.torproject.org/projects/torbrowser.html.en</em:homepageURL>
         <em:iconURL>chrome://torbutton/skin/tor.png</em:iconURL>