Fix wrong conditional

The `unless process.env.HUBOT_GITHUB_API` conditional was wrong and the script was not working on non-enterprise APIs.
Does not always return on org-pulls
[janky] slightly more helpful error messages
[janky] merge our messages so they don't come out in a random order
update jquery selector for first google search result to new page structure
Updated the location of the users list

Apparently the location of the users list has changed and this script has not been updated to show that. The help for this script also says that it will mention every person in the room. This will in fact mention everyone on the server.
Adjust the thank-you script to use word boundaries

At our company, we have an employee whose name is a substring of our Hubot instance's name.  This fixes that.
Added caltrain script