Consider re-naming pageLoading() parameters

[jscheel]

calling pageLoading(true) to hide the page loading dialog is not intuitive at all. It should instead be pageLoading(true) to show it and pageLoading(false) to hide it. I haven't looked at the code, but if you are using true because it's returning a value somewhere that you just pass straight into the call, just call pageLoading(!val)

[toddparker]

Added to the feature request wiki:
https://github.com/jquery/jquery-mobile/wiki/Feature-Requests