StreamEntry model. Simply render Salmon slaps as they are needed

I haven't had a chance to test this, because I don't currently have a fully functioning computer I can set up a dev-environment on, but this *should* make it so when a user toggles a post to be private, a disclaimer appears clarifying what "private" really means.

Add variable for text of privacy disclaimer

Allow PuSH to distribute private toots with that condition

if account lock info was up to date, otherwise re-do the FollowService
with now updated information

This should help federation

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

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