[WIP] Overhaul the documentation site (#1030)

Overhaul the whole documentation site

docs/posts/contact.md

@@ -0,0 +1,26 @@
+---
+layout: default
+title: Contact
+description: Contact
+---
+# Get in touch
+
+We'd love to hear from you!
+
+For questions, suggestions, or accolades, [join the `#cellxgene-users` channel on the CZI Science Slack](https://join-cellxgene-users.herokuapp.com/) and say "hi!".
+
+For any errors, [report bugs on Github](https://github.com/chanzuckerberg/cellxgene/issues).
+
+# Team
+
+The current core team:
+
+- Colin Megill, frontend & product design
+- Bruce Martin, software engineer
+- Sidney Bell, computational biologist
+- Lia Prins, designer
+- Severiano Badajoz, software engineer
+
+We would also like to gratefully acknowledge contributions from past core team members:
+
+- Charlotte Weaver, software engineer