Cluster Occupancy (n dim cube) (#513)

* create occupancy component

* occupancy working

* centering, width, flex spacing

* add is-number

* extend sort to cover string + int

* proof of concept sorted occupancy

* handle undefined occupancy entry, cleanup

* only render occupancy when colorby is cat

* cleanup unused vars

* cleanup

client/package-lock.json

@@ -5202,6 +5202,17 @@
         "randomatic": "^3.0.0",
         "repeat-element": "^1.1.2",
         "repeat-string": "^1.5.2"
+      },
+      "dependencies": {
+        "is-number": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-2.1.0.tgz",
+          "integrity": "sha1-Afy7s5NGOlSPL0ZszhbezknbkI8=",
+          "dev": true,
+          "requires": {
+            "kind-of": "^3.0.2"
+          }
+        }
       }
     },
     "finalhandler": {
@@ -6776,13 +6787,9 @@
       "dev": true
     },
     "is-number": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/is-number/-/is-number-2.1.0.tgz",
-      "integrity": "sha1-Afy7s5NGOlSPL0ZszhbezknbkI8=",
-      "dev": true,
-      "requires": {
-        "kind-of": "^3.0.2"
-      }
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
+      "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng=="
     },
     "is-obj": {
       "version": "1.0.1",