swap sdt for ees mailbox on ees / dashboards pages

[cjrace]

Overview of changes

Swap the mailboxes from SDT to EES

Why are these changes being made?

The team has split so we're now splitting the responsibilities for each mailbox more clearly

Detailed description of changes

Changed a bunch of EES and dashboard pages, left the overall references as Jen / SDT are the overall owner, and also the references in learning resources and RAP sections as they sit with SDT

Places where references to SDT mailbox still exist:

Issue ticket number/s and link

Resolves #65

Checklist before requesting a review

• I have checked the contributing guidelines
• I have checked for and linked any relevant issues that this may resolve
• I have checked that these changes build locally
• I understand that if merged into main, these changes will be publicly available

[cjrace]

Swap over mailbox references in the analysts guide

[jen-machin]

Apologies for the many comments, some of which are on things you didn't even write