- Updated default install pages to be for the beta builds
- Moved v20 install pages to a new -v20 pages
- Created new vmware page to go over how to request/download a new VMWare Workstation (now that they are under Broadcom)
- Add blog release to educational resources
- removed several unused .md files
- removed instances of "Unidata" (replaced with "NSF Unidata" or something else)
- add note to d2d-perspectives about GFE only supported with OAX site
- removed all images that don't apply for v20
- removed several extra files that aren't necessary (in the docs/pdf/ and docs/python/ directories)
- renamed some images that were preserved that had random character names, to something descriptive
