[ci skip]

This reverts commit 5daf44b7, reversing
changes made to 2f706fbd.

This reverts commit 957e849f, reversing
changes made to 6b9dbe9f.

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

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

Rephrased wording in the documentation to say "installation from source" instead of  "manual installation" or similar.

product names, plus a couple of instances of bad Markdown markup.

This reverts commit 5cf6d594.

* "Non Unix"->"Non-Unix"
* Fix poor wording

* seems like a small mistake ;-)

Explain that sidekiq doesn't eat as much ram as some people seem to suspect https://twitter.com/khrogos/status/498062432938782720

Based on http://www.reddit.com/r/linux/comments/2bffgt/gitlab_71_released/cj59wvz reword this requirement, thankstictatonifonical.