Currently this method responds with `text/html`. It is kind of unusable
if you open it in a browser. The browser thinks it is HTML and renders
it as HTML, meaning new lines are dropped. So it's very hard to
distinguish where the key starts and where it ends.

This commit changes the content type header to `text/plain`.

Cloud Update

/cc @jacobvosmaer @marin @job

Oauth Require Public Email

Does not fix #976 yet, but will reduce the amount of users getting 422 immensly.

Deploy Key Doc

/cc @marin @job @jacobvosmaer

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

Changelog O'Reilly

added "Better API for access_levels" sponsorship from O'Reilly to CHANGELOG

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

Git Refactoring

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

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

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

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

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

typo fix

Someone Asked Us To Update The Changelog

Add .adoc file extension for AsciiDoc

Fix registration error info typo

Switched line endings to LF for system_hooks.md

Speed up features/notes_on_merge_requests_spec

Visibility traits for Project Factory

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

Nprogress

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

Uses the :simple merge request factory trait introduced by d166e70; cuts
execution time of this spec in half.

This spec featured the slowest tests in the entire suite. After some
debugging, the cause was found to be the large commit diff generated by
comparing the stable and master branches.

To fix this, the seed repository was modified to create a simple branch
off of master that consists of three simple commits and minor changes.
The spec was then updated to compare master to this branch instead of
stable. The result is a spec group that runs in under 30 seconds, down
from about 90.

Fix travis setup

Added Slack service integration.

Prevent LDAP users from using reset password function