Closes gitlab-com/support-forum#1270

This update adds support for Rails 5. Also update redis-rails dependencies.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/2814

This was the only thing using the `sdoc` gem, which was blocking another
gem from updating.

ChangeLog: https://github.com/samg/diffy/blob/master/CHANGELOG

ChangeLog: https://github.com/deckar01/task_list/compare/1.0.5...1.0.6

See: https://github.com/kickstarter/rack-attack/blob/master/CHANGELOG.md

When we updated gitlab_git to 10.4.1, `tag.target` changed from pointing
to the sha of the tag to the sha of the commit the tag points to. The
problem is that only annotated tags have `object_sha`s, lightweight tags
don't (it's nil), so (only) in their case we still need to use
`tag.target`.

Code improvements, bug fixes, finish documentation and specs

Bump `omniauth-saml` to 1.7.0 to include security fixes and metadata support for IdP auto-configuration.

This gem follows semantic versioning and will not introduce breaking
changes in a minor version. See
https://github.com/steveklabnik/request_store#semantic-versioning

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/2868

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/22278

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

Signed-off-by: NRémy Coutable <remy@rymai.me>

Closes #20273

Truncato is introduced as a dependency to intelligently shorten the rendered
HTML to 200 characters; the previous approach could have resulted in invalid
HTML being rendered.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/22537

`Style/VariableNumber` is explicitly disabled because I don't think we
care if we name a variable `var_1` or `var1`.

Changelog: https://github.com/mbleigh/acts-as-taggable-on/blob/master/CHANGELOG.md#400--2016-08-08

This solve issues with ruby builds with rubygems preload
see https://github.com/ruby-prof/ruby-prof/pull/191Signed-off-by: NRémy Coutable <remy@rymai.me>

This fixes an issue with Rails 5 and brings us up-to-date with the latest Devise release.

This also replaces the deprecated Devise::TestHelpers with Devise::Test::ControllerHelpers.

Changelog: https://github.com/plataformatec/devise/blob/v4.2.0/CHANGELOG.md#420---2016-07-01

 update sprockets version

Upgrade unicorn from 4.9.0 to 5.1.0 and unicorn-worker-killer from 0.4.2 to 0.4.4.

Changelog for unicorn: http://unicorn.bogomips.org/NEWS.html

Changelog for unicorn-worker-killer: https://github.com/kzk/unicorn-worker-killer/blob/bdec225f028d1bda01b5888578c479b0c705f1a8/ChangeLog

This reverts commit 70faf5fd, reversing
changes made to 2307eb84.

It's mainly intended to improve Elasticsearch indexing performance
(through multi_json gem), but other gems could benefit from it too, like
grape.

Closes #22260

Changelog:
https://github.com/mperham/sidekiq/blob/921e939f995fbb5238975d4121d728b95be99ab5/Changes.md#421

Sinatra is no longer required and sidekiq uses a vanilla Rack app for
its Web UI now.