"Various apps are available" is now a hyperlink

Remove note about following Gargron@mastodon.social from getting started text

"whole known network" which is what public timeline used to be

Only domain blocks with suspend severity will block PuSH subscriptions
Silenced accounts should not appear in conversations unless followed

This makes so clicking the link to the github opens in a new tab or windows.

I just keep getting frustrated clicking the link to github and then losing my place in my home timeline >_> that's all

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

The "settings" links in the Getting Started section (or, if #399 were to happen, "more" menu) and compose sections are now different; the "compose" link is "Edit profile," while the one in the Getting Started section is now "Preferences."

All languages have been updated to accommodate this, based on the existing usages of these phrases in language files in the Rails part of the app!

addresses part of #384

Also, only update relative time every minute instead of 6 seconds. My bad