Ability to clone project using oauth2 token

See merge request !1447

UX improvements (Implement lessons from user testing)

* add link to permissions help page from new project/group member form
* Improve UX for widget if merge request can not be merged
* Improve wording for fork project page

See merge request !1448

Small css improvements

See merge request !1450

Create gitlab internal issue service

Part of #1908

Create a default gitlab issue tracker service which will replace having issue tracker fields for project.

See merge request !1449

Update semantic-ui-sass to 1.8

Saner LDAP defaults

I have the impression that most people use LDAP servers listening
on port 389, without encryption. If we make that the default we
give people a smoother ride setting up GitLab.

See merge request !1446

#1019: Broadcast message does not show up properly with new UI

With the new UI, the broadcast message is the first level child element of the body tag and then render full width without respecting the width of the left sidebar. This makes the message goes under the left sidebar in smaller screen.

This commit fixes the issue by moving the message element into the "page-with-sidebar" div so it will always render together with the main content area with same look as before. The rendering for the search, login and other view without left sidebar remains untouched.

Releases: master, 7-7-stable

Fixes: #1019

See merge request !315

With the new UI, the broadcast message is the first level child element
of the body tag and then render full width without respecting the width
of the left sidebar. This makes the message goes under the left sidebar
in smaller screen.

This commit fixes the issue by moving the message element into the
"page-with-sidebar" div so it will always render together with the main
content area with same look as before. The rendering for the search,
login and other view without left sidebar remains untouched.

Releases: master, 7-7-stable
Fixes: #1019

Add tests for creating bare repo and first file in UI

Part of #1930

See merge request !1444

Move external issue tracker away from yml config

See merge request !1442

Handle errors on API when a project does not have a repository

Remember the project default tab for 30 days