Install additional useful wagtail libraries

Pipfile

@@ -13,6 +13,8 @@ elasticsearch = "<3.0.0,>=2.0.0"
 django-redis = "*"
 whitenoise = "*"
 waitress = "*"
+wagtail-markdown = "*"
+wagtail-metadata = "*"
 
 [dev-packages]
 mypy = "*"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "c604273bbe462273ad51836b3ae13a11aa1c7ddfa2b71cac0eccfbe520d696fe"
+            "sha256": "5ffa0692528697679dcd7085a5f33c448b989d70f53afa989c7a6a213377fc3e"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -24,6 +24,13 @@
             ],
             "version": "==4.6.0"
         },
+        "bleach": {
+            "hashes": [
+                "sha256:b8fa79e91f96c2c2cd9fd1f9eda906efb1b88b483048978ba62fef680e962b34",
+                "sha256:eb7386f632349d10d9ce9d4a838b134d4731571851149f9cc2c05a9a837a9a44"
+            ],
+            "version": "==2.1.3"
+        },
         "certifi": {
             "hashes": [
                 "sha256:13e698f54293db9f89122b0581843a782ad0934a4fe0172d2a980ba77fc61bb7",
@@ -130,6 +137,13 @@
             ],
             "version": "==2016.6.4"
         },
+        "markdown": {
+            "hashes": [
+                "sha256:9ba587db9daee7ec761cfc656272be6aabe2ed300fece21208e4aab2e457bc8f",
+                "sha256:a856869c7ff079ad84a3e19cd87a64998350c2b94e9e08e44270faef33400f81"
+            ],
+            "version": "==2.6.11"
+        },
         "pillow": {
             "hashes": [
                 "sha256:00def5b638994f888d1058e4d17c86dec8e1113c3741a0a8a659039aec59a83a",
@@ -289,6 +303,22 @@
             "index": "pypi",
             "version": "==2.1.1"
         },
+        "wagtail-markdown": {
+            "hashes": [
+                "sha256:a101ccb78382b853e5a3aeeeef248ec13e77a115441731466ed49a30429c4e90",
+                "sha256:cb081ca56b6cdab9d73d6800001f85ab72ff3cecbdcbc15ebc687b77994420d7"
+            ],
+            "index": "pypi",
+            "version": "==0.5"
+        },
+        "wagtail-metadata": {
+            "hashes": [
+                "sha256:538b8b1be09f5cb9fb624ddd841bf7a1603fcbfd17e2e2482879211198c8c1c9",
+                "sha256:b18e1615fe1e67e871f736686a84a972ef2dc3cf4f085cc44612a416f0ba6970"
+            ],
+            "index": "pypi",
+            "version": "==2.0.0"
+        },
         "waitress": {
             "hashes": [
                 "sha256:40b0f297a7f3af61fbfbdc67e59090c70dc150a1601c39ecc9f5f1d283fb931b",