Renaming function back to original in lieu of a helper function.

This reverts commit 0c15abc14f7ea4a95c5a4145ff3de590556be8ba.
Add jetpack_shortcode_get_youtube_id helper function.
Merge pull request #936 from kraftbj/youtube-shortcode

Rename jetpack_get_youtube_id to jetpack_shortcode_get_youtube_id
Update Travis email list
Refining the setting of site_tag when twitter:creator is present.

This is an attempt to close #935. I added a class method that
will take in the current value for site_tag and og_tags and
return a new value for site_tag if twitter:creator is set in
og_tags. If nothing is set, it returns the original value of
site_tag.
Merge pull request #511 from pdclark/infinite-scroll-fix-cross-domain-error

Resolve cross-domain error causing infinite-scroll to fail on HTTPS
Shortcodes: Fix [googlemaps] shortcode reversal false positive.

`jetpack_googlemaps_embed_to_short_code()` is intended to only reverse URLs in
the format of `https://maps.google.com` or `https://google.com/maps/`, but it
is matching `google.com` any domain.

For example, the following tag will be reversed into a `[googlemaps]` shortcode
even though it should not be:

<iframe src="https://docs.google.com/spreadsheets/d/19FacgevvN-GGS8SOlbMRVKkWDYSMDQEBfRmkwqaA9z8/pubhtml?widget=true&amp;headers=false"></iframe>

The problem is that the code mistakeningly tests for a `false` return from
`preg_match()` instead of `0` or `false`. Unlike `strpos()`, `preg_match()`
returns `0` if the pattern is not matched, and `false` if there is an error.
Because of this, the condition evaluates to true, and the function
doesn't returns early.

This bug was introduced in 7d5c5a77b25474798554fba4e8f72c853f96b507.
Merge pull request #523 from rase-/fix/carousel-full-image-link

Tiled Gallery: Pass Carousel URLs through Photon.
Merge pull request #557 from rase-/add/rows

Added row and group containers to square and circle Tiled Galleries
Merge pull request #227 from kraftbj/github-225-csstidy

Adds @supports to TidyCSS.
Featured Content: Add a user option to keep featured posts in main queries.

Replaces https://github.com/Automattic/jetpack/pull/82.
Merge branch 'master' into use-twitter-creator-for-twitter-site
Minileven: Disable Featured Images on single view and pages by default.
Merge pull request #711 from Automattic/kwight-minileven-featured-images

Minileven: Add a setting to display featured images.
Merge pull request #308 from csonnek/wp-display-posts-css-update

Top Posts: add "width: 100%" to images in CSS
Speed: Abstract out function call.

Previously ran 30x for a 23ms hit in vvv, let’s abstract it out to only
run once.
Added additional random parameters Fixes #867

Made changes as per @enejb's comments.
Asset Min: check for an empty $plugin to short out

Resolves a few rare-ish errors.

Worked with @jeherve to resolve.

Ship in 3.1.1 as well.
Translation Updates!
Move theme support check to `add_setting` argument