Enhancement of how breadcrumbs for Custom Post Types are named.

As suggested in: http://wordpress.org/support/topic/change-custom-post-type-label-for-breadcrumbs
Merge branch 'master' of git://github.com/jdevalk/wordpress-seo into Enhancement-breadcrumbs-cpt

Conflicts:
	readme.txt
Merge branch 'master' of git://github.com/jdevalk/wordpress-seo into Enhancement-breadcrumbs-cpt
Merge branch 'master' of git://github.com/jdevalk/wordpress-seo into Enhancement-breadcrumbs-cpt
Merge branch 'master' of git://github.com/jdevalk/wordpress-seo into Enhancement-breadcrumbs-cpt
Merge branch 'master' of git://github.com/jdevalk/wordpress-seo into Enhancement-breadcrumbs-cpt
Updating the 'class-metabox.php'

I needed to add a variable on this filter to allow the developer to know what post is been requested, instead of just the post content.
Merge pull request #239 from tudoparawp/master

Updating the 'class-metabox.php'
Add option to disable slug stop word cleaning
Add $post to all instances of `wpseo_pre_analysis_post_content` filter
Move help on Titles & Metas admin page to help tab
Updated translations

Updated de_DE, fa_IR, fi, hu_HU, it_IT, pl_PL, sv_SE and tr_TK
* Fix for compatibility with NextGen Gallery.
* bump to 1.4.16
Fixes comment of @GaryJones on [this commit](https://github.com/Yoast/wordpress-seo/commit/70b42d471427d53e1befe422b6251db7d0fc21d8)
Really fix stop words cleaning this time and move to 1.4.17
No longer unset shutdown hook as that breaks caching plugins.
Push 1.4.18.
Portuguese translation is now 100%
Switch to new newsletter system.
* Updated newsletter subscription form to reflect new newsletter system.
* Documentation
	* Updated readme.txt to reflect support changes.
	* Moved old sections of changelog to external file.
Fix typo
Move all rewrite flushing to shutdown, so it doesn't break other plugins who add their rewrites late.