Move icons back into SIG data

static/js/common.js

@@ -285,6 +285,19 @@ function callWanted(call) {
     }
 }
 
+// Get the Font Awesome icon for a given SIG. If the SIG is unknown, the provided default symbol will be returned
+// The sig is provided by name as a string, while all_sigs contains all the SIG info from the options call. This
+// is because sometimes the sig name arrives via a spot and therefore we need to look up the rest of the SIG data
+// separately.
+function sigToIcon(sig, all_sigs, defaultIcon) {
+    if (sig) {
+        const match = all_sigs.find((check_sig) => check_sig["name"].toUpperCase() === sig.toUpperCase());
+        if (match) {
+            return match["icon"];
+        }
+    }
+    return defaultIcon;
+}
 
 // Startup
 $(document).ready(function () {