Populate the info window correctly.
Add the correct styling to info images.

Float ‘em right, and add a 1px border.
Module Related Posts: Cleanup use of blog_id params

Stop passing around blog_id as function params and use protected vars set
during `init()` call. In addition, explicitly define local vs. wpcom blog
ids to avoid confusion when used on MU Jetpack sites.

The resolves #337
Merge pull request #344 from xyu/related-posts-337

Module Related Posts: Cleanup use of blog_id params
Whitespace tidying.

Better align stuff.
Move the filter for jetpack_require_lib_dir

This should hit in the network admin as well, or else it could cause a
fatal error when the library can’t be found as it’s looking in the
wrong place.
Remove `merge-data.json`

Creating this file was useful for testing the merge algorithm,
but it turns out it's not actually required, so there's no point
in keeping it around.

See r93711-wpcom.