NFC zero-click sharing for Email.

This shares the e-mail address of the currently shown account
over P2P NFC links. Note that the currently set account must
be updated actively, because the callback to create the message
comes from one of the NFC threads, which don't have permissions
to retrieve the account and the correspondig e-mail address.

Change-Id: I12e48a3787d469179e7ca074429106ed24e3a212
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index c6143ec..67557a2 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -53,6 +53,9 @@
     <uses-permission
         android:name="android.permission.READ_CONTACTS"/>
 
+    <uses-permission
+        android:name="android.permission.NFC"/>
+
     <!-- Only required if a store implements push mail and needs to keep network open -->
     <uses-permission
         android:name="android.permission.WAKE_LOCK"/>