Table minSize. Fall back to Table if visualization is missing.

frontend/src/visualizations/Table.jsx

@@ -11,6 +11,8 @@ export default class Bar extends Component {
     static identifier = "table";
     static iconName = "table";
 
+    static minSize = { width: 4, height: 4 };
+
     static isSensible(cols, rows) {
         return true;
     }

frontend/src/visualizations/index.js

@@ -32,4 +32,9 @@ registerVisualization(USStateMap);
 registerVisualization(WorldMap);
 registerVisualization(PinMap);
 
-export default visualizations;
+export default {
+    get(name) {
+        // default to table if the visualization is missing so we don't blow up
+        return visualizations.get(name) || Table;
+    }
+};