reintroducing the post progress indicator, fixing gutter links, reducing white space between posts
FIX: Use `post_count` instead of `topic_reply_count` in education for replies.
Merge branch 'master' of git://github.com/awesomerobot/discourse into awesomerobot-master

Conflicts:
	app/assets/stylesheets/mobile/topic-post.css.scss
	app/assets/stylesheets/mobile/topic.css.scss
Russian translation (actual version)

Plus crowdin service reformats some strings
New site settings to enable/disable the possibility of editing user's nickname or email address
HandlebarsOneboxes: avoid constants multiple declarations
fixed history modal, topic progress now sticky to last post, edits heatmap is back, date/edit links now grey
Merge pull request #1440 from awesomerobot/master

fixed history modal, topic progress now sticky to last post, others...
Merge pull request #1439 from zvikara/master

HandlebarsOneboxes: avoid constants multiple declarations
Merge pull request #1437 from abbat/master

Russian translation (actual version)
Merge pull request #1419 from mguillemot/non_editable_username_and_email

Enable/disable the possibility of editing user's nickname or email
disable XML params, they are just used by malicious bots to determine if we have XML vuls.
Add a link to the email setup doc
Merge pull request #1442 from ZogStriP/patch-1

Add a link to the email setup doc
Cleanup duplication in SesssionsController

modifying commit for PR feedback