Add Events. Fixes cernopendata#1920

cernopendata/modules/fixtures/data/terms/terms.json

@@ -164,6 +164,37 @@
       "primary": "Glossary"
     }
   },
+  {
+    "anchor": "Events",
+    "category": "generic",
+    "definition": "An event is a collision of the beams. In the LHC, it is primarily a collision of protons, but it can also use beams of ions.",
+    "links": [
+      {
+        "text": "Read more on Wikipedia",
+        "url": "https://en.wikipedia.org/wiki/Event_(particle_physics)"
+      }
+    ],
+    "see_also": [
+      {
+        "term": "proton"
+      },
+      {
+        "term": "Pile-up"
+      },
+      {
+        "term": "ion"
+      }
+    ],
+    "term": [
+      "Event",
+      "event",
+      "Events",
+      "events"
+    ],
+    "type": {
+      "primary": "Glossary"
+    }
+  },
   {
     "anchor": "generator",
     "category": "generic",
@@ -516,6 +547,9 @@
       {
         "term": "reconstruction"
       },
+      {
+        "term": "Events"
+      },
       {
         "term": "primary"
       }
@@ -613,7 +647,7 @@
   {
     "anchor": "proton",
     "category": "generic",
-    "definition": "A stable composite particle belonging to the \u201chadron\u201d family of particles, made of two up quarks and a down quark. It has a +1 electrical charge and is found in the nuclei of atoms. A proton has a mass of ~938 MeV/c<sup>2</sup>, or about 1836 times the mass of an electron. Protons are one of the species of particles collided at the LHC.",
+    "definition": "A stable composite particle belonging to the \u201chadron\u201d family of particles, made of two up quarks and a down quark. It has a +1 electrical charge and is found in the nuclei of atoms. A proton has a mass of $\\sim 938 MeV/c^2$, or about 1836 times the mass of an electron. Protons are one of the species of particles collided at the LHC.",
     "links": [
       {
         "text": "Read more on Wikipedia",