Shorten name for Gecko

Comply with the 50 characters limit for the extension name in Firefox.

Change-Id: I6d6d8e4063ff7f64bdedf7257b5a56504d079f9c
diff --git a/release.bash b/release.bash
index 6b8851e..fb03c6e 100644
--- a/release.bash
+++ b/release.bash
@@ -81,6 +81,10 @@
     # Change the extension ID
     set_manifest_field "id" "twpowertools+beta@avm99963.com"
   fi
+else
+  if [[ $browser == "gecko" ]]; then
+    set_manifest_field "name" "__MSG_appNameGecko__"
+  fi
 fi
 
 # Create ZIP file for upload to the Chrome Web Store