DataConnectionLibrary Feature is Missing in Sharepoint 2013

I am trying to create a Data Connection library in SharePoint 2013 (for use with InfoPath) but the Data Connection Library app does not appear in the list of available apps.

I have already enabled the SharePoint Server Standard Site Collection features in the site collection.

So I found this solution 

You can install the feature by executing the following commands in "SharePoint 2013 Management Shell": 

Install-SPFeature DataconnectionLibrary
Install-SPFeature DataconnectionLibraryStapling

That'll make it available on future sites. You can then enable it on existing sites by executing this command for each:

Enable-SPFeature DataConnectionLibrary -url http://siteurl