Cleanup of UI

[ericm]

• Remove X from top left (https://prnt.sc/19308fp).
• Remove sort options from instance tables (https://prnt.sc/1930gko).
• Change link to TOS in footer to https://wiki.netsoc.co/en/services/terms-of-service.
• Add link in navbar to main website.

Add subsequent UI issues in the comments.