clean up undefined variable errors, exposed by analytics recording

src/snac/client/webui/WebUI.php

@@ -259,6 +259,7 @@ class WebUI implements \snac\interfaces\ServerInterface {
         // Workflow: Handle user commands, perform actions
         // *************************************************
 
+        $response = "";
 
         switch($this->input["command"]) {
 

src/snac/client/webui/WebUIExecutor.php

@@ -4091,7 +4091,7 @@ class WebUIExecutor {
      */
     public function recordAnalytics($input) {
         $request = ["command" => "analytics"];
-        $request["icid"] = $input["icid"];
+        $request["icid"] = isset($input["icid"]) ? $input["icid"] : "";
         $request["url"] = $input["url"];
         $request["repo_ic_id"] = $input["repo_ic_id"];
         $this->connect->query($request);