diff --git a/Pipfile.lock b/Pipfile.lock
index 167eb2a..fba2305 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -31,6 +31,7 @@
                 "sha256:0d6f53a15db4120f2b08c94f11e7d93d2c911ee118b6b30a04ec3ee8310179fa",
                 "sha256:f864054d66fd9118f2e67044ac8981a54775ec5b67aed0441892edb553d21da5"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
             "version": "==4.0.0"
         },
         "coreapi": {
@@ -51,11 +52,11 @@
         },
         "django": {
             "hashes": [
-                "sha256:2484f115891ab1a0e9ae153602a641fbc15d7894c036d79fb78662c0965d7954",
-                "sha256:2569f9dc5f8e458a5e988b03d6b7a02bda59b006d6782f4ea0fd590ed7336a64"
+                "sha256:3339ff0e03dee13045aef6ae7b523edff75b6d726adf7a7a48f53d5a501f7db7",
+                "sha256:f2084ceecff86b1e631c2cd4107d435daf4e12f1efcdf11061a73bf0b5e95f92"
             ],
             "index": "pypi",
-            "version": "==2.2.20"
+            "version": "==2.2.24"
         },
         "django-appconf": {
             "hashes": [
@@ -119,6 +120,7 @@
                 "sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6",
                 "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==2.10"
         },
         "itypes": {
@@ -133,6 +135,7 @@
                 "sha256:1f06f2da51e7b56b8f238affdd6b4e2c61e39598a378cc49345bc1bd42a978a4",
                 "sha256:703f484b47a6af502e743c9122595cc812b0271f661722403114f71a79d0f5a4"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==3.0.1"
         },
         "markdown": {
@@ -181,6 +184,7 @@
                 "sha256:f9081981fe268bd86831e5c75f7de206ef275defcb82bc70740ae6dc507aee51",
                 "sha256:fa130dd50c57d53368c9d59395cb5526eda596d3ffe36666cd81a44d56e48872"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==2.0.1"
         },
         "mock": {
@@ -325,6 +329,7 @@
                 "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
                 "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==1.16.0"
         },
         "sqlparse": {
@@ -332,6 +337,7 @@
                 "sha256:017cde379adbd6a1f15a61873f43e8274179378e95ef3fede90b5aa64d304ed0",
                 "sha256:0f91fd2e829c44362cbcfab3e9ae12e22badaa8a29ad5ff599f9ec109f0454e8"
             ],
+            "markers": "python_version >= '3.5'",
             "version": "==0.4.1"
         },
         "uritemplate": {
@@ -339,6 +345,7 @@
                 "sha256:07620c3f3f8eed1f12600845892b0e036a2420acf513c53f7de0abd911a5894f",
                 "sha256:5af8ad10cec94f215e3f48112de2022e1d5a37ed427fbd88652fa908f2ab7cae"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==3.0.1"
         },
         "urllib3": {
@@ -346,6 +353,7 @@
                 "sha256:753a0374df26658f99d826cfe40394a686d05985786d946fbe4165b5148f5a7c",
                 "sha256:a7acd0977125325f516bda9735fa7142b909a8d01e8b2e4c8108d0984e6e0098"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
             "version": "==1.26.5"
         }
     },
@@ -362,6 +370,7 @@
                 "sha256:149e90d6d8ac20db7a955ad60cf0e6881a3f20d37096140088356da6c716b0b1",
                 "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
             "version": "==21.2.0"
         },
         "black": {
@@ -377,6 +386,7 @@
                 "sha256:8c04c11192119b1ef78ea049e0a6f0463e4c48ef00a30160c704337586f3ad7a",
                 "sha256:fba402a4a47334742d782209a7c79bc448911afe1149d07bdabdf480b3e2f4b6"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==8.0.1"
         },
         "django-extensions": {
@@ -400,6 +410,7 @@
                 "sha256:83c4f8cec14cd08179d8b4bfe8c5e48724efadac8add187f385c68d6ae2345e6",
                 "sha256:b1bead90b70cf6ec3f0710ae53a525360fa360d306a86583adc6bf83a4db537d"
             ],
+            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==0.18.2"
         },
         "jinja2": {
@@ -407,6 +418,7 @@
                 "sha256:1f06f2da51e7b56b8f238affdd6b4e2c61e39598a378cc49345bc1bd42a978a4",
                 "sha256:703f484b47a6af502e743c9122595cc812b0271f661722403114f71a79d0f5a4"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==3.0.1"
         },
         "joblib": {
@@ -414,6 +426,7 @@
                 "sha256:9c17567692206d2f3fb9ecf5e991084254fe631665c450b443761c4186a613f7",
                 "sha256:feeb1ec69c4d45129954f1b7034954241eedfd6ba39b5e9e4b6883be3332d5e5"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==1.0.1"
         },
         "livereload": {
@@ -479,6 +492,7 @@
                 "sha256:f9081981fe268bd86831e5c75f7de206ef275defcb82bc70740ae6dc507aee51",
                 "sha256:fa130dd50c57d53368c9d59395cb5526eda596d3ffe36666cd81a44d56e48872"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==2.0.1"
         },
         "mccabe": {
@@ -509,6 +523,7 @@
                 "sha256:6947fb7f5e4291e3c61405bad3539d81e0b3cd62ae0d66ced018128af509c68f",
                 "sha256:d90c807a88348aa6d1805657ec5c0b2d8d609c110e62b9dce4daf7fa981fa338"
             ],
+            "markers": "python_version >= '3.5'",
             "version": "==1.0.1"
         },
         "nltk": {
@@ -530,6 +545,7 @@
                 "sha256:514f76d918fcc0b55c6680472f0a37970994e07bbb80725808c17089be302068",
                 "sha256:c389c1d06bf7904078ca03399a4816f974a1d590090fecea0c63ec26ebaf1cef"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==2.7.0"
         },
         "pyflakes": {
@@ -537,6 +553,7 @@
                 "sha256:7893783d01b8a89811dd72d7dfd4d84ff098e5eed95cfa8905b22bbffe52efc3",
                 "sha256:f5bc8ecabc05bb9d291eb5203d6810b49040f6ff446a756326104746cc00c1db"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==2.3.1"
         },
         "pygments": {
@@ -544,6 +561,7 @@
                 "sha256:a18f47b506a429f6f4b9df81bb02beab9ca21d0a5fee38ed15aef65f0545519f",
                 "sha256:d66e804411278594d764fc69ec36ec13d9ae9147193a1740cd34d272ca383b8e"
             ],
+            "markers": "python_version >= '3.5'",
             "version": "==2.9.0"
         },
         "pymdown-extensions": {
@@ -551,6 +569,7 @@
                 "sha256:141452d8ed61165518f2c923454bf054866b85cf466feedb0eb68f04acdc2560",
                 "sha256:b6daa94aad9e1310f9c64c8b1f01e4ce82937ab7eb53bfc92876a97aca02a6f4"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==8.2"
         },
         "pyyaml": {
@@ -586,6 +605,7 @@
                 "sha256:fdc842473cd33f45ff6bce46aea678a54e3d21f1b61a7750ce3c498eedfe25d6",
                 "sha256:fe69978f3f768926cfa37b867e3843918e012cf83f680806599ddce33c2c68b0"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
             "version": "==5.4.1"
         },
         "qrcode": {
@@ -649,6 +669,7 @@
                 "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
                 "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==1.16.0"
         },
         "toml": {
@@ -656,6 +677,7 @@
                 "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b",
                 "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"
             ],
+            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==0.10.2"
         },
         "tornado": {
@@ -712,6 +734,7 @@
                 "sha256:736524215c690621b06fc89d0310a49822d75e599fcd0feb7cc742b98d692493",
                 "sha256:cd5791b5d7c3f2f1819efc81d36eb719a38e0906a7380365c556779f585ea042"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==4.61.0"
         },
         "typed-ast": {