Revert "Merge pull request #5852 from margori/3393-activity-stream-keeping-retracted-participations"

This reverts commit 096fa2dd, reversing
changes made to f7d11051.

add execution permission to scripts

fix minor errors in db:seed task

Issue #5508: Remove post_presenter from initializers

Fix the IE version number extractor to work without space between MSIE and the version number

Readd aspect sorting

Issue #5874 Fix styled links

- move to contacts.js
- use json
- move to aspects_controller
- add route
- rewrite test
- fix css in chrome

fix script/server sanity checks

fix sanity checks in script/server, remove migration check because it is too slow and Rails 4 checks it on first request anyway

Fix unconventional image asset inclusion in css asset

fix broken output of script/server

This reverts commit 8d8d3c64.

Conflicts:
	app/assets/javascripts/main.js

use camo for medium and small avatars

encode unencoded urls and normalize IDN urls

fix notification mails for limited posts

Fix the IE version number extractor to work without space between MSIE and the version number, close #5858

GET requests don't get any CSRF protection by Rails,
thus these sensitive actions should be better protected.

Thanks to @tomekr for the report.

Also redirect to it for download, for Amazon S3
compatibility.

Prior to this patch an attacker could obtain an
users export by guessing the filename with a high
chance of success. Fully authenticating the
download request is a lot harder due to our diverse
deployment scenarios.

This brings the used method in line with the photo
export feature.

Thanks to @tomekr for the report.