Merge pull request #2250 from apache/fauxton-1.2.1

Update Fauxton to 1.2.1
diff --git a/rebar.config.script b/rebar.config.script
index 88cec89..d431cbe 100644
--- a/rebar.config.script
+++ b/rebar.config.script
@@ -110,7 +110,7 @@
 {docs,             {url, "https://github.com/apache/couchdb-documentation"},
                    {tag, "2.3.0"}, [raw]},
 {fauxton,          {url, "https://github.com/apache/couchdb-fauxton"},
-                   {tag, "v1.2.0"}, [raw]},
+                   {tag, "v1.2.1"}, [raw]},
 %% Third party deps
 {folsom,           "folsom",           {tag, "CouchDB-0.8.3"}},
 {hyper,            "hyper",            {tag, "CouchDB-2.2.0-4"}},