Add componentHanderConfig to configure upgrade on page load

[AlexanderOtavka]

Resolves #4780.

You can now, set window.componentHanderConfig = { preventAutoUpgrade: true }; before including the mdl script to disable the automatic upgrade of all components on page load.

I'm not sure how to document this change for the larger community, but I feel like it should be up on the MDL website.

Also, any suggestions for a better API for this feature are welcome.

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[AlexanderOtavka]

I signed it.

[googlebot]

CLAs look good, thanks!

[Garbee]

Let's discuss things in #4780 before reviewing this PR. I have some concerns which are best discussed in the main thread.

Thank you.

[Garbee]

LGTM awaiting review from @sgomes as well before merge.

[AlexanderOtavka]

It looks like phantomjs is having trouble installing, but I don't think I caused that. My branch is a few commits behind, should I merge from the tip of mdl-1.x?

[Garbee]

Nah, shouldn't be necessary to rebase. I just restarted the builds. It is bitbucket throttling downloads because PhantomJS get's a lot. They really need to move their archive hosting elsewhere.

[AlexanderOtavka]

Ok, good. And thanks for all the advice.

[sgomes]

LGTM, thanks @AlexanderOtavka! I'll keep this open a few more days to see if any 1.2.x changes show up, as once this gets merged the next release will have to be on the 1.3.x range.

[AlexanderOtavka]

Fantastic, happy to help.

[traviskaufman]

@sgomes can we merge this?

[sgomes]

@traviskaufman Yup. Let's officially start the 1.3 merge window with this.