Update Phoenix, add Phoenix.HTML.

mix.exs

@@ -28,7 +28,7 @@ defmodule Pleroma.Mixfile do
   #
   # Type `mix help deps` for examples and options.
   defp deps do
-    [{:phoenix, "~> 1.3.0-rc"},
+    [{:phoenix, "~> 1.3.0"},
      {:phoenix_pubsub, "~> 1.0"},
      {:phoenix_ecto, "~> 3.2"},
      {:postgrex, ">= 0.0.0"},
@@ -37,6 +37,7 @@ defmodule Pleroma.Mixfile do
      {:comeonin, "~> 3.0"},
      {:trailing_format_plug, "~> 0.0.5" },
      {:html_sanitize_ex, "~> 1.3.0-rc1"},
+     {:phoenix_html, "~> 2.10"},
      {:calendar, "~> 0.16.1"},
      {:cachex, "~> 2.1"},
      {:httpoison, "~> 0.11.2"},