Added the capability to upload CSV files

static/csv.js

@@ -0,0 +1,47 @@
+function parse(text) {
+  let state = 0;
+  let idx = 0;
+  let current = '';
+  let curr_row = [];
+  let rows = [];
+  
+  while(idx < text.length) {
+    switch (text[idx]) {
+      case '\\':
+        current += text[idx++];
+        break;
+
+      case '"':
+        if(current.length == 0) {
+          while(text.length > idx && text[++idx] != '"')
+            current += text[idx];
+        }
+        break;
+
+      case ',':
+        if (/^\d+(\.\d+)?$/.test(current)) {
+          let asnum = parseFloat(current);
+          curr_row.push(asnum);
+        } else {
+          curr_row.push(current);
+        }
+        current = '';
+        break;
+
+      case '\n':
+        curr_row.push(current);
+        current = '';
+        rows.push(curr_row);
+        curr_row = [];
+        break;
+
+      default:
+        current += text[idx];
+        break;
+    }
+    idx++;
+  }
+  return rows;
+}
+
+export default parse;