- `Rails.root` is a `Pathname`, so let's use `Rails.root.join`
- Clean up most of the remaining `File.join`s

show a "post is not public" message when visitor is not logged in

strip comment text upon comment creation

and tries to access a show page of a non-public post

Edited git to https for access behind firewalls [ci skip]

update heroku_san gem [ci skip]

updating from 2.9 ~> 2.10 causes
spec/controllers/publics_controller_spec.rb  to break.  Namely, it now
seems that the host_meta, and web finger actions now return successful
http codes, but have blank bodies. Running this code by hand shows that
the response bodies are indeed not  blank, as reported by rspec-rails
2.9.x

update a bunch more unlocked gems [ci skip]

according to rspec-rails docs, rspec-rails should be in both test and development groups.  Also, remove some implied gems which are sucked in by rspec-rails

remove border from reshare link [ci skip]

allow interactions to be viewed on public posts when not logged in

updating rails to 3.2.5

This reverts commit 5af37fd3.