add xml attributes for combobox node and add resolution selection for new doc

engine/node_dialog_cloud.cpp

@@ -43,23 +43,6 @@ void NodeDialogCloud::loaded()
 {
 }
 
-std::vector<std::string> split(const std::string& subject, char d, int max_split = 0) 
-{
-    std::vector<std::string> ret;
-    int start = 0;
-    int n = subject.find_first_of(d);
-    while (n != std::string::npos)
-    {
-        ret.push_back(subject.substr(start, n - start));
-        start = n + 1;
-        if (max_split && ret.size() == max_split)
-            break;
-        n = subject.find_first_of(d, start);
-    }
-    ret.push_back(subject.substr(start));
-    return ret;
-}
-
 void NodeDialogCloud::load_thumbs_thread()
 {
     CURL *curl = curl_easy_init();