Replace grape-route-helpers with our own grape-path-helpers

See merge request gitlab-org/gitlab-ee!5905

# Conflicts:
#	Gemfile.lock
#	app/models/repository.rb
#	app/views/projects/merge_requests/show.html.haml
#	app/views/shared/_import_form.html.haml
#	doc/api/merge_requests.md
#	doc/ci/variables/README.md
#	doc/ci/variables/where_variables_can_be_used.md
#	doc/user/project/merge_requests/index.md
#	doc/user/project/merge_requests/squash_and_merge.md
#	lib/api/settings.rb
#	lib/api/v3/merge_requests.rb
#	spec/fixtures/api/schemas/entities/merge_request_widget.json
#	spec/fixtures/api/schemas/public_api/v3/merge_requests.json
#	spec/fixtures/api/schemas/public_api/v4/merge_requests.json

[ci skip]

Resolve "BS4: Import project page is missing margins and wells"

Closes #46879

See merge request gitlab-org/gitlab-ce!19215

Resolve "Geo: Unauthenticated rate limits should not block Geo requests"

Closes #5974

See merge request gitlab-org/gitlab-ee!5876

Fix import project by url layout

See merge request gitlab-org/gitlab-ee!5889

Remove version lock on awesome_print dependency

See merge request gitlab-org/gitlab-ce!19232

Only preload member records for the relevant projects/groups/user in projects API

See merge request gitlab-org/gitlab-ce!18945

Replace grape-route-helpers with our own grape-path-helpers

Closes #45718

See merge request gitlab-org/gitlab-ce!19240

This gem (https://gitlab.com/gitlab-org/grape-path-helpers) makes a number of changes:

1. Brings in @mdelaossa's changes in https://github.com/reprah/grape-route-helpers/pull/21
2. Fixes some broken specs and code for Grape 1.0+
3. Optimizes the generation of paths by bringing in @dblessing's
   HashWithIndifferentAccess changes in https://gitlab.com/gitlab-org/gitlab-ce/issues/45718#note_70123793

Closes #45718

Simplify spec: `2.times.each` -> `2.times`

See merge request gitlab-org/gitlab-ce!19242

CE upstream - 2018-05-29 12:26 UTC

See merge request gitlab-org/gitlab-ee!5882

Consider we might have prefix for stable branches

See merge request gitlab-org/gitlab-ce!19237

Resolve "gitlab is not sending ObjectStore timeout value to workhorse"

Closes #46917

See merge request gitlab-org/gitlab-ce!19201

Bumps kubeclient gem version to 3.1.0

See merge request gitlab-org/gitlab-ce!19199

EE: Consider we might have prefix for stable branches

See merge request gitlab-org/gitlab-ee!5900

Add `shared_projects` endpoint

Closes #46800

See merge request gitlab-org/gitlab-ce!19141

Resolve "Job Failed #71275338"

Closes #46973

See merge request gitlab-org/gitlab-ce!19247

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

Fix boolean casting for nil value

Closes #46925

See merge request gitlab-org/gitlab-ce!19202

add details on root flag related to no_root_squash

See merge request gitlab-org/gitlab-ce!19001

Fixed broken link to build team in documentation

Closes #46949

See merge request gitlab-org/gitlab-ce!19224