Remove satellites from requirements docs and add CHANGELOG

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

CHANGELOG

@@ -29,6 +29,8 @@ v 7.14.0 (unreleased)
   - Disabled autocapitalize and autocorrect on login field (Daryl Chan)
   - Mention group and project name in creation, update and deletion notices (Achilleas Pipinellis)
   - Remove redis-store TTL monkey patch
+  - Fetch code from forks to refs/merge-requests/:id/head when merge request created
+  - Remove satellites 
 
 v 7.13.2
   - Fix randomly failed spec

doc/install/requirements.md

@@ -40,7 +40,7 @@ We love [JRuby](http://jruby.org/) and [Rubinius](http://rubini.us/) but GitLab
 
 ### Storage
 
-The necessary hard drive space largely depends on the size of the repos you want to store in GitLab but as a *rule of thumb* you should have at least twice as much free space as all your repos combined take up. You need twice the storage because [GitLab satellites](structure.md) contain an extra copy of each repo.
+The necessary hard drive space largely depends on the size of the repos you want to store in GitLab but as a *rule of thumb* you should have at least as much free space as all your repos combined take up. 
 
 If you want to be flexible about growing your hard drive space in the future consider mounting it using LVM so you can add more hard drives when you need them.