starting to add select2 box for batch codes

src/HtmlUtils.py

@@ -0,0 +1,10 @@
+def getBatchcodes(batchCodeTable):
+    return batchCodeTable['Batch'].dropna().unique()
+
+
+def getBatchcodeOptions(batchcodes):
+    return [_getBatchcodeOption(batchcode) for batchcode in batchcodes]
+
+
+def _getBatchcodeOption(batchcode):
+    return '<option value="{batchcode}">{batchcode}</option>'.format(batchcode=batchcode)