Add simple open http ability to trigger methods

Right now the http method on a trigger is overly complex and actually very limited when thinking about the most simple application. The idea would be that based upon a simple evaluation of keywords in the chat message the client sends (assuming an unconnected session of course), a trigger could respond by opening a webpage or simply spitting back a url in the text chat they can click on. You could then set up a series of triggers evaluating for certain keywords that would point clients to various KB articles in a support site. This allows a self service situation before the tech even needs to get involved, wrapped into the same support tool.