got most of the WebUI updated and working

Software/src/common.cpp

@@ -0,0 +1,8 @@
+#include "common.h"
+
+const char *BatteryString[] = {
+    "Undefined",
+    "LiPo 2S",
+    "LiPo 3S"};
+
+const size_t BatteryString_Elements = sizeof(BatteryString) / sizeof(BatteryString[0]);