Add dealing with newlines for editor to 5.1-to-6.0

backport of https://github.com/gitlabhq/gitlabhq/commit/2d681c0d1ed14bf23c041aa04fa3e77caceda9a1
Update gemnasium-gitlab-service
Update org-ruby
Fix Md style for API.
Fix Md style for projects API doc.
Consistency: Capitalize hex values of sugested colors
Fix grammar and spelling
Consistency, spelling and grammar
Merge pull request #7511 from jbrooksuk/api-docs

Consistency, spelling and grammar
Merge pull request #7510 from jbrooksuk/patch-1

Fix grammar and spelling
Merge pull request #7508 from cirosantilli/md-style-projects

Fix Md style for projects API doc.
Merge pull request #7509 from cirosantilli/fix-md-style-api

Fix Md style for API.
Fix minor spelling error
Fix labels return code
Bump version to 7.2.0.rc1
Merge pull request #7496 from Razer6/captalize_suggested_colors

Consistency: Capitalize hex values of sugested colors
Merge pull request #7493 from Razer6/update_gems_with_errors

Update gems with errors, to prevent 500 errors
Merge pull request #7527 from Razer6/api_labels_return_code

API: Fix labels return code
Add missing elements to webhook doc
Merge pull request #7524 from Razer6/repo_settings_spelling_error

Fix minor spelling error in repo settings page