Text for link to other instances

This should help federation

There were some markdown processing errors which I've cleaned up

Change list of known instances to a table with additional information per instance. Add awoo.space and gay.crime.team

status is not in the system at time of distribution; fix #607 - reset privacy
settings to defaults when cancelling replies

Refresh timelines when streaming API reconnects in the UI

Expose ActivityStreams 2.0 representation of accounts

to only those from local users; Add link to "extended information" to
getting started in the UI; Add defaults for posting privacy; Change
how publish button looks depending on posting privacy chosen

Try to fix Travis CI setup

warning mentions preview into area where actual content would be

overshadow requirement for remote-lookup

untested, my vagrant is bugged again, submitted at gargron's request

work flawlessly was a nightmare). WARNING: This commit makes the web UI connect to the streaming API instead
of ActionCable like before. This means that if you are upgrading, you should set that up beforehand.

sounds complex, but really it just reorganizes the posting options and
adds a seperator line