MOps Handbook Updates 20210104 - 20210117

Why is this change being made?

WIP MR for all marketing operations handbook updates as part of MktgOps: 20210104 - 20210117.

List of changes (Please list high-level changes here so we can quickly know what changed in this MR):

1. Remove sentence linking to global board and project since it's already linked in the section @sdaily
2. PathFactory: add content expiration policy @sdaily
3. PathFactory: add content type for landing page @sdaily
4. Clarification on operational emails + mural @amy.waller
5. OneTrust: add support section with links @sdaily
6. Add new directory and handbook page for Hotjar @sdaily
7. Removed directions for PF and Marketo + all references @amy.waller @sdaily
8. Add LaunchDarkly to martech stack @sdaily
9. Update scoring @amy.waller
10. Smartling: add IDML file section and link best practices @sdaily
11. Add myself to mktg ops page @RobRosu
12. Add paragraph about weekly milestone MRs @sdaily
13. PathFactory: add webhook info @sdaily
14. Add target list review issue link @amy.waller
15. Drift Scoring @amy.waller

Author Checklist

• Provided a concise title for the MR
• Added a description to this MR explaining the reasons for the proposed change, per say-why-not-just-what
• Assign this change to the correct DRI
  • If the DRI for the page/s being updated isn’t immediately clear, then assign it to one of the people listed in the "Maintained by" section in on the page being edited.
  • If your manager does not have merge rights, please ask someone to merge it AFTER it has been approved by your manager in #mr-buddies.
  • If the changes relate to any part of the project other than updates to content and/or data files please make sure to ping @gl-static-site-editor in a comment for a review and merge. For example changes to .gitlab-ci.yml, JavaScript/CSS/Ruby code or the layout files. (this requirement has been removed pending identification of a new DRI for the handbook)