Don't load stratopan dependency graphs in the background

[oalders]

According to @thaljef, there's a request for the graph on every page view that includes it, regardless of whether the modal is ever opened.

[thaljef]

I think I can partially mitigate the problem by adding a few cache-control headers.

But it is nice that the graphs appear instantly. And my server hasn't fallen over yet.

So I suggest leaving this issue open, but putting it on the back burner for now.

[chankeypathak]

I think graph widget data should only be loaded when the user asks for it (when Dependency graph is clicked). We can do it by listening to click event and making an ajax call. Does this approach look good?

[thaljef]

We can do it by listening to click event and making an ajax call. Does this approach look good?

Since the content is in an iframe, I don't think AJAX is the answer. Instead, I think we would use the click event to inject the iframe into the DOM, and then the browser will do the rest. At least, that's my theory.

Since we are using Bootstrap, we may be able to hook into events on the modal rather than resorting to raw Javascript event binding.

See "Events" here: http://getbootstrap.com/javascript/#modals-usage