REST API: Add ability to paginate and order taxonomies.

Defaults to returning 100 items, with a max of 1000 per call.

http://[private link]

props @mdawaffe

Merges r104028-wpcom.
Merge branch 'master' of https://github.com/Automattic/jetpack
Remove force_url_to_non_ssl function.

In favour of core `set_url_scheme`.
Revert "Remove force_url_to_non_ssl function."

This reverts commit 0678457004cf20113a1f385cd8d840d5545e9011.
Switch from manual notifications to grunt-notify
Merge branch 'master' of sandbox:~/jetpack
Merge branch 'master' of https://github.com/Automattic/jetpack
i18n: consolidate context for "Comment" string as just noun and verb to streamline translations.

See http://[private link]

Fixes #6552

Merges r104231-wpcom.
JSON API: Approve an unapproved comment when you reply to it.

This behavior now matches the core wp-admin/ behavior.

http://[private link]

Merges r104232-wpcom.
Merge branch 'master' of sandbox:~/jetpack
Likes: Sync content when likes module is on. Fixes #697
Sync: Provide better alerting if site is too large to sync automatically

Resolves #1024
Merge pull request #1061 from xyu/fix/issue-697

Likes: Sync content when likes module is on. Fixes #697
Merge pull request #1064 from xyu/fix/issue-1024

Sync: Provide better alerting if site is too large to sync automatically
Sync: Refactor sync needed logic into sync object
Likes: Trigger bulk sync of old content so we can do likes everywhere
Merge pull request #1065 from xyu/fix/issue-697.1

Part 2 of #1061