records: date_created is a list

* Amends schema, serialisers, fixtures to make `date_created` a list. Useful for
  values such as `2010-2012`. (closes #2505)

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>

Author: tiborsimko

cernopendata/jsonschemas/records/record-v1.0.0.json

@@ -174,8 +174,11 @@
       "type": "array"
     },
     "date_created": {
-      "description": "The year the resource was created or the data-taking year for datasets",
-      "type": "string"
+      "items": {
+        "description": "The data-taking year during which the collision data or for which the simulated data, software and other assets were produced",
+        "type": "string"
+      },
+      "type": "array"
     },
     "date_published": {
       "description": "The year of publication on the portal",

cernopendata/modules/fixtures/data/records/alice-reconstructed-data.json

@@ -14,7 +14,9 @@
       "energy": "7TeV",
       "type": "pp"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -82,7 +84,9 @@
       "energy": "2.76TeV",
       "type": "PbPb"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -150,7 +154,9 @@
       "energy": "2.76TeV",
       "type": "PbPb"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -218,7 +224,9 @@
       "energy": "2.76TeV",
       "type": "PbPb"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -286,7 +294,9 @@
       "energy": "2.76TeV",
       "type": "PbPb"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -354,7 +364,9 @@
       "energy": "2.76TeV",
       "type": "PbPb"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -422,7 +434,9 @@
       "energy": "2.76TeV",
       "type": "PbPb"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -490,7 +504,9 @@
       "energy": "2.76TeV",
       "type": "pp"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -558,7 +574,9 @@
       "energy": "7TeV",
       "type": "pp"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -626,7 +644,9 @@
       "energy": "7TeV",
       "type": "pp"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -694,7 +714,9 @@
       "energy": "7TeV",
       "type": "pp"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -762,7 +784,9 @@
       "energy": "7TeV",
       "type": "pp"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -830,7 +854,9 @@
       "energy": "7TeV",
       "type": "pp"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [
@@ -898,7 +924,9 @@
       "energy": "7TeV",
       "type": "pp"
     },
-    "date_created": "2010",
+    "date_created": [
+      "2010"
+    ],
     "date_published": "2016",
     "distribution": {
       "formats": [

cernopendata/modules/fixtures/data/records/atlas-all-samples.json

@@ -14,7 +14,9 @@
       "energy": "8TeV",
       "type": "pp"
     },
-    "date_created": "2012",
+    "date_created": [
+      "2012"
+    ],
     "date_published": "2016",
     "distribution": {
       "number_files": 1,