[Refactor] Refactoring URLs of classic and cloud manager guides

[nmelehan]

This PR consists of the following steps:

1. Some cleanup/preparation work was done in 15b0d04, fab8aab, a0508b7, faa6065

2. The theme was rebuilt in 73bf038

3. A script was run in 153d309 that performed the bulk of the work. The script is here: https://gist.github.com/nmelehan/7963fe44f43328b1bd4f7d29a83dfc49. The tasks it performs are:

   • Move all classic guides to URL slugs that end in -classic-manager
   • Move all cloud guides to URL slugs that have no suffix (remove -new-manager suffix)
   • Add classic_manager_link to cloud guides that links back to the classic guide version
   • Add cloud_manager_link to classic guides that links forward to the cloud guide version
   • Hides classic guides from index and search (by setting hiddenguide: true in yaml)
   • Unhides cloud guides from index and search (by removing hiddenguide: true in yaml)
   • Removes aliases from classic guides
   • Merges aliases previously on classic guides with aliases on cloud guides and applies them to cloud guides
   • Also aliases previous -new-manager URL slug on cloud guides to cloud guides

---

The following is a list of all aliases that were found across all guides that were updated. This list also includes the URLs of cloud manager guides that previously featured the -new-manager suffix. To verify the correctness of this PR, run a curl against them and check for 404s:

http://localhost:1313/docs/accounts-and-passwords/
http://localhost:1313/docs/backup-service/
http://localhost:1313/docs/billing-and-payments/
http://localhost:1313/docs/dns-guides/configuring-dns-with-the-linode-manager/
http://localhost:1313/docs/dns-manager/
http://localhost:1313/docs/getting-started-new-manager/
http://localhost:1313/docs/linode-images/
http://localhost:1313/docs/linode-manager-security/
http://localhost:1313/docs/linode-platform/nodebalancer-howto/
http://localhost:1313/docs/linode-platform/nodebalancer-reference/
http://localhost:1313/docs/migrate-to-linode/disk-images/resizing-a-linode/
http://localhost:1313/docs/monitoring-and-maintaining/
http://localhost:1313/docs/networking/configure-your-linode-for-reverse-dns/
http://localhost:1313/docs/networking/dns/dns-manager-overview/
http://localhost:1313/docs/networking/dns/dns-manager/
http://localhost:1313/docs/networking/dns/setting-reverse-dns/
http://localhost:1313/docs/networking/Setting-Up-Reverse-DNS-Lookup/
http://localhost:1313/docs/nodebalancers/getting-started/
http://localhost:1313/docs/nodebalancers/reference/
http://localhost:1313/docs/platform/accounts-and-passwords/
http://localhost:1313/docs/platform/api/getting-started-with-the-linode-api-new-manager/
http://localhost:1313/docs/platform/backup-service/
http://localhost:1313/docs/platform/billing-and-payments/
http://localhost:1313/docs/platform/billing-and-support/billing-and-payments-new-manager/
http://localhost:1313/docs/platform/billing-and-support/support-new-manager/
http://localhost:1313/docs/platform/block-storage/how-to-use-block-storage-with-your-linode-new-manager/
http://localhost:1313/docs/platform/disk-images/linode-backup-service-new-manager/
http://localhost:1313/docs/platform/disk-images/linode-images-new-manager/
http://localhost:1313/docs/platform/how-to-use-block-storage-with-your-linode/
http://localhost:1313/docs/platform/linode-backup-service/
http://localhost:1313/docs/platform/linode-images/
http://localhost:1313/docs/platform/manager/accounts-and-passwords-new-manager/
http://localhost:1313/docs/platform/manager/dns-manager-new-manager/
http://localhost:1313/docs/platform/network-helper-new-manager/
http://localhost:1313/docs/platform/nodebalancer/getting-started-with-nodebalancers-new-manager/
http://localhost:1313/docs/platform/nodebalancer/nodebalancer-reference-guide-new-manager/
http://localhost:1313/docs/platform/stackscripts-new-manager/
http://localhost:1313/docs/platform/support/
http://localhost:1313/docs/quick-answers/linode-platform/reset-the-root-password-on-your-linode-new-manager/
http://localhost:1313/docs/quick-answers/linode-platform/resize-a-linode-disk-new-manager/
http://localhost:1313/docs/resizing/
http://localhost:1313/docs/security/backups/linode-backup-service/
http://localhost:1313/docs/security/linode-manager-security-controls-new-manager/
http://localhost:1313/docs/security/linode-manager-security-controls/
http://localhost:1313/docs/stackscripts/
http://localhost:1313/docs/support/
http://localhost:1313/docs/uptime/monitoring-and-maintaining-your-server-new-manager/

Curl command for your convenience:

curl -IL \
http://localhost:1313/docs/accounts-and-passwords/ \
http://localhost:1313/docs/backup-service/ \
http://localhost:1313/docs/billing-and-payments/ \
http://localhost:1313/docs/dns-guides/configuring-dns-with-the-linode-manager/ \
http://localhost:1313/docs/dns-manager/ \
http://localhost:1313/docs/getting-started-new-manager/ \
http://localhost:1313/docs/linode-images/ \
http://localhost:1313/docs/linode-manager-security/ \
http://localhost:1313/docs/linode-platform/nodebalancer-howto/ \
http://localhost:1313/docs/linode-platform/nodebalancer-reference/ \
http://localhost:1313/docs/migrate-to-linode/disk-images/resizing-a-linode/ \
http://localhost:1313/docs/monitoring-and-maintaining/ \
http://localhost:1313/docs/networking/configure-your-linode-for-reverse-dns/ \
http://localhost:1313/docs/networking/dns/dns-manager-overview/ \
http://localhost:1313/docs/networking/dns/dns-manager/ \
http://localhost:1313/docs/networking/dns/setting-reverse-dns/ \
http://localhost:1313/docs/networking/Setting-Up-Reverse-DNS-Lookup/ \
http://localhost:1313/docs/nodebalancers/getting-started/ \
http://localhost:1313/docs/nodebalancers/reference/ \
http://localhost:1313/docs/platform/accounts-and-passwords/ \
http://localhost:1313/docs/platform/api/getting-started-with-the-linode-api-new-manager/ \
http://localhost:1313/docs/platform/backup-service/ \
http://localhost:1313/docs/platform/billing-and-payments/ \
http://localhost:1313/docs/platform/billing-and-support/billing-and-payments-new-manager/ \
http://localhost:1313/docs/platform/billing-and-support/support-new-manager/ \
http://localhost:1313/docs/platform/block-storage/how-to-use-block-storage-with-your-linode-new-manager/ \
http://localhost:1313/docs/platform/disk-images/linode-backup-service-new-manager/ \
http://localhost:1313/docs/platform/disk-images/linode-images-new-manager/ \
http://localhost:1313/docs/platform/how-to-use-block-storage-with-your-linode/ \
http://localhost:1313/docs/platform/linode-backup-service/ \
http://localhost:1313/docs/platform/linode-images/ \
http://localhost:1313/docs/platform/manager/accounts-and-passwords-new-manager/ \
http://localhost:1313/docs/platform/manager/dns-manager-new-manager/ \
http://localhost:1313/docs/platform/network-helper-new-manager/ \
http://localhost:1313/docs/platform/nodebalancer/getting-started-with-nodebalancers-new-manager/ \
http://localhost:1313/docs/platform/nodebalancer/nodebalancer-reference-guide-new-manager/ \
http://localhost:1313/docs/platform/stackscripts-new-manager/ \
http://localhost:1313/docs/platform/support/ \
http://localhost:1313/docs/quick-answers/linode-platform/reset-the-root-password-on-your-linode-new-manager/ \
http://localhost:1313/docs/quick-answers/linode-platform/resize-a-linode-disk-new-manager/ \
http://localhost:1313/docs/resizing/ \
http://localhost:1313/docs/security/backups/linode-backup-service/ \
http://localhost:1313/docs/security/linode-manager-security-controls-new-manager/ \
http://localhost:1313/docs/security/linode-manager-security-controls/ \
http://localhost:1313/docs/stackscripts/ \
http://localhost:1313/docs/support/ \
http://localhost:1313/docs/uptime/monitoring-and-maintaining-your-server-new-manager/

[nmelehan]

Netlify testing of aliases succeeded:
https://gist.github.com/nmelehan/1dd0c09397f6ac6f83ffe82b8d0907ce