change http to https where applicable

[OmgImAlexis]

http://jquerymobile.com/themeroller redirects to https://themeroller.jquerymobile.com so I've updated that.

[agcolom]

@OmgImAlexis Thank you very much for your PR. We do use tabs and not spaces, and it seems that in your PR all our tabs have been replaced by spaces (probably some setting in your text editor?). Could you please change the spaces back to tabs in your PR? Thank you.
@AurelioDeRosa @kswedberg, apart from the spacing issue, are we happy with the changes? thanks

[AurelioDeRosa]

Apart from the spacing, it seems fine. I've tested almost every link updated and they still work.

[OmgImAlexis]

@agcolom the main problem not only with this PR but with most of the PRs I've opened and had to close is that the jQuery org doesn't seem to have an editorconfig files in ANY of the repos. If you added that then it wouldn't matter what I used since it'd be changed on save since I have a plugin for editorconfig installed.

For ref: http://editorconfig.org/

[agcolom]

@OmgImAlexis Oh,I see. Thanks for the details and link. I'll check with the @jquery/content team how we can best accommodate this.

[AurelioDeRosa]

I'll submit a PR to add an .editorconfig file today so that we can refine and the merge it.