Show warning message in WebUI after user login if the vpn resource group reach maximum

Add div block in welcome.html
Use timer in JS to check if there is variable start from "AN_res_limit_check" because it is generated by c, there will be time delay.
Get the only variable start from "AN_res_limit_check", such as "_AN_res_limit_check_vpn_resource_g1", then get the group name. in this case, the group name is "vpn_resource_g1"
Get the value for the variable.
Check is the group name and value is valid (not null or empry data), then use jQuery to set message for the div block.

I have checked with C engineer, the variable will only one group for each Vsite.

so I can just break the process after I get the variable:

for (var prop in window) {
    if (prop.indexOf('_AN_res_limit_check_') !== -1 && typeof window[prop] != "undefined") {
        foundVariable = window[prop];
        groupType = prop.replace('_AN_res_limit_check_', '');
        break; // Because there is only one group per virtual site, I just jump our loop after I get the variable.
    }
}