`InternalRedirect` prevents Open redirect issues by only allowing
redirection to paths on the same host.

It cleans up any unwanted strings from the path that could point to
another host (fe. //about.gitlab.com/hello). While preserving the
querystring and fragment of the uri.

It is already used by:

- `TermsController`
- `ContinueParams`
  - `ImportsController`
  - `ForksController`
- `SessionsController`: Only for verifying the host in CE. EE allows
   redirecting to a different instance using Geo.

This enforces the terms in the web application. These cases are
specced:

- Logging in: When terms are enforced, and a user logs in that has not
  accepted the terms, they are presented with the screen. They get
  directed to their customized root path afterwards.
- Signing up: After signing up, the first screen the user is presented
  with the screen to accept the terms. After they accept they are
  directed to the dashboard.
- While a session is active:
  - For a GET: The user will be directed to the terms page first,
    after they accept the terms, they will be directed to the page
    they were going to
  - For any other request: They are directed to the terms, after they
    accept the terms, they are directed back to the page they came
    from to retry the request. Any information entered would be
    persisted in localstorage and available on the page.

When a user accepts, we store this in the agreements to keep track of
which terms they accepted. We also update the flag on the user.

This will act as a cache, otherwise we would need to load the
`term_agreements` for a user on each request.

Using this field the result we're interested in is loaded when the
current user is loaded, without causing an extra query.

When terms are present, they can be viewed on `/-/users/terms`.

We will reuse the the dropdown, but exclude some menu items based on
permissions.

So moving the menu to a partial, and adding checks for each menu item here.

This allows admins to define terms in the application settings.

Every time the terms are adjusted, a new version is stored and becomes
the 'active' version. This allows tracking which specific version was
accepted by a user.

That way we can link a users acceptance of terms directly to a terms record.

Add a flag to applications settings to enforce users to accept terms
before using the GitLab instance

Group SAML SSO Page (But not the parts to make the sign in button work)

See merge request gitlab-org/gitlab-ee!5508

Fix network error message styling on Geo admin dashboard

Closes #5806

See merge request gitlab-org/gitlab-ee!5530

Resolve "Geo: Don't block "Edit" and "Remove" buttons while status is loading"

Closes #5351

See merge request gitlab-org/gitlab-ee!5526

Ignore db/schema.rb and locale/gitlab.pot in `ee-specific-lines-check`

See merge request gitlab-org/gitlab-ee!5571

CE upstream - 2018-05-03 18:26 UTC

See merge request gitlab-org/gitlab-ee!5567

Resolve ""Repository mirroring paused" email link is invalid"

Closes #5740

See merge request gitlab-org/gitlab-ee!5546

SamlProvider has many linked Identities

See merge request gitlab-org/gitlab-ee!5507

# Conflicts:
#	LICENSE

[ci skip]

Move TimeTrackingSpentOnlyPane vue component

See merge request gitlab-org/gitlab-ce!18710

Move TimeTrackingSpentOnlyPane vue component

See merge request gitlab-org/gitlab-ee!5559

Add padding to profile description

Closes #35727

See merge request gitlab-org/gitlab-ce!18663

Added changes count to web IDE folder

See merge request gitlab-org/gitlab-ce!18452

Changes HTML version of mirror was hard failed email to use full path instead of relative path for the project

Change the docs license to CC BY-SA

See merge request gitlab-org/gitlab-ce!18718

Change the docs license to CC BY-SA

See merge request gitlab-org/gitlab-ee!5565

update omniauth-github ~> 1.1.1 to ~> 1.3

See merge request gitlab-org/gitlab-ce!18668

CE upstream - 2018-05-03 13:09 UTC

Closes gitaly#1146

See merge request gitlab-org/gitlab-ee!5561

As discussed in https://gitlab.com/gitlab-org/gitlab-ce/issues/42891

As discussed in https://gitlab.com/gitlab-org/gitlab-ce/issues/42891

Refactor the Geo LogCursor Logger to make class more descriptive

Closes #5632

See merge request gitlab-org/gitlab-ee!5483

Output some useful information when running the rails console

See merge request gitlab-org/gitlab-ce!18697

See https://gitlab.com/gitlab-org/gitlab-ce/issues/45970