fix typo

- remove unwanted code
	- fix dropdown bug
	- add bar graph for test count

src/components/AbsorbanceGraph.js

@@ -52,7 +52,7 @@ class AbsorbanceGraph extends Component {
             .then(response => response.data.text())
             .then((text) => {
                 const testData = d3.csvParse(text.replaceAll('"', '')).filter(x => {
-                    if (x.NM > 350 && x.NM < 600 
+                    if (x.NM > 350 && x.NM < 600
                         && x.CA !== "-Infinity" && x.CA !== "Infinity"
                         && !isNaN(x.CA)) return x;
                 });