update Fauxton to 1.1.20
diff --git a/rebar.config.script b/rebar.config.script
index c483b19..34dbdfa 100644
--- a/rebar.config.script
+++ b/rebar.config.script
@@ -85,7 +85,7 @@
 
 DepDescs = [
 %% Independent Apps
-{config,           "config",           {tag, "2.1.5"}},
+{config,           "config",           {tag, "2.1.4"}},
 {b64url,           "b64url",           {tag, "1.0.1"}},
 {ets_lru,          "ets-lru",          {tag, "1.0.0"}},
 {khash,            "khash",            {tag, "1.0.1"}},
@@ -96,7 +96,7 @@
 {docs,             {url, "https://github.com/apache/couchdb-documentation"},
                    {tag, "2.3.0"}, [raw]},
 {fauxton,          {url, "https://github.com/apache/couchdb-fauxton"},
-                   {tag, "v1.1.19"}, [raw]},
+                   {tag, "v1.1.20"}, [raw]},
 %% Third party deps
 {folsom,           "folsom",           {tag, "CouchDB-0.8.2"}},
 {hyper,            "hyper",            {tag, "CouchDB-2.2.0-4"}},