Update and resolve confusion about the DM onboarding process:
- Remove instruction to email IT for project credentials, instead indicate that hires should remind T/CAMs to fill out https://project.lsst.org/onboarding/form.
- Link to project onboarding instructions https://confluence.lsstcorp.org/display/IT/Account+Management
- In general, provide more direct instructions to T/CAMs on their role in onboarding, and link to the LSST IT onboarding page from those instructions. (The current instructions are written primarily for new hires rather than managers).