Enable Freshly Pressed for Jetpack Blogs

Enhanced Distribution: Add a server-side catch that will return JSON
data if ?get_freshly_pressed_data=true
-- will return the WPCOM Blog ID and Post ID (both of which are
probably accessible on the page already, but
this simplifies things and confirms that the Enhanced Distribution
module is enabled (as we wouldn't want to
Freshly Pressed a post otherwise).
Media Extractor: avoid notices when preg_match fails

More details here:
http://wordpress.org/support/topic/non-robust-code-in-jetpack_media_meta_extractorget_images_from_html
Media Extractor: pass all variables to isset()

See #46
Add AJAX endpoints for bulk reindexing operations.

New endpoints to trigger reindex and to get the status of a current reindex
operation from the WordPress.com servers.
Inital stub for reindex request UI.
Adding Related Posts Module

Initial commit of a new module to make it possible to uses the
WordPress.com Elasticsearch infrastructure to find related posts.
Add RTL Stylesheets

Automatically generated on Jan 14 2014 19:04:19
Flesh out more info card for related posts

Add a screenshot and links to support page on jetpack.me for the related
posts feature.
Move Bulk Reindexing Code into Jetpack_Sync

Move trigger and status getter methods into the Jetpack_Sync class and keep
JSON endpoints in the Jetpack class.
Use Jetpack_Sync method to trigger a bulk sync on activate.
Move Reindex Triggers

Move manual reindex triggers into info card of the related posts module
from the Jetpack debugging center.
Revert Debugger Change
Merge branch 'master' into module-related-posts

Conflicts:
	modules/module-info.php
Add Module Icon for Related Posts

Props @jasmussen
Tweak Module Description for Related Posts
Simplify Configs for Related Posts Module

Remove the feature toggle for related posts by default as it must be
activated from the Jetpack dashboard anyways.
Better Wordsmithing
Use Jetpack_Options to track bulk reindex status
Use Jetpack_Options whenever possible
Fix percentage calculation