Related Posts: Change width of .jp-relatedposts-post max-width 320px to 100% to prevent overflow. Fixes #311
Merge pull request #312 from kraftbj/related-post-mobile

Related Posts: Change width of .jp-relatedposts-post
Module Related Posts: Update RTL CSS file based on aa20b5f from @kraftbj
Merge pull request #318 from xyu/related-post-mobile-rtl

Module Related Posts: Update RTL CSS file based on aa20b5f from @kraftbj
Module Related Posts: Bring dashboard settings preview more inline with what is generated by the module.
Module Related Posts: Add shortcode to allow for custom placement within content.

Add a optional shortcode `[jetpack-related-posts]` which users can place
anywhere in the post content to display a related post section. If no
shortcode exists we default back to placing it at the bottom of the post as
happens now.
Merge pull request #319 from xyu/related-post-shortcode

Module Related Posts: Add a shortcode for custom placement
Update external Sass processor library

Bump from v0.0.7 to v0.0.9

@see https://github.com/leafo/scssphp/blob/v0.0.9/scss.inc.php
Twitter Cards: fix typo in class name
Twitter Cards: trim whitespace
Twitter Cards: update to jetpack textdomain on Settings Page
Publicize: fix typo in comment
Publicize: trim whitespace
Twitter Cards: remove extra @ from jetpack_twitter_cards_site_tag

It caused a double "@@jetpack" in the Twitter sharing prompt