Unable to install due to missing '_create_chatcatcher_secret' + fix

Issue Summary

When trying to install Chat Catcher, I got an error message saying that the chatcatcher.install could not find the function _create_chatcatcher_secret()

Adding this line as first line of function chatcatcher_install() (in chatcatcher.install) fixed it:

include_once('chatcatcher.module');

Unfortunately, I'm not able to make a patch.