Move CSP headers to the appropriate Rails configuration

Also drop dev-static.glitch.social reference.

config/environments/production.rb

@@ -99,7 +99,6 @@ Rails.application.configure do
     'X-Frame-Options'         => 'DENY',
     'X-Content-Type-Options'  => 'nosniff',
     'X-XSS-Protection'        => '1; mode=block',
-    'Content-Security-Policy' => "frame-ancestors 'none'; object-src 'none'; script-src 'self' https://dev-static.glitch.social ; base-uri 'none';" , 
     'Referrer-Policy'         => 'same-origin',
     'Strict-Transport-Security' => 'max-age=63072000; includeSubDomains; preload',
     'X-Clacks-Overhead' => 'GNU Natalie Nguyen'

config/initializers/content_security_policy.rb

@@ -2,17 +2,19 @@
 # For further information see the following documentation
 # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy
 
-# Rails.application.config.content_security_policy do |p|
+Rails.application.config.content_security_policy do |p|
+  p.frame_ancestors :none
+  p.object_src  :none
+  p.script_src  :self
+  p.base_uri :none
 #  p.default_src :self, :https
 #  p.font_src    :self, :https, :data
 #  p.img_src     :self, :https, :data
-#   p.object_src  :none
-#   p.script_src  :self, :https
 #  p.style_src   :self, :https, :unsafe_inline
 #
 #  # Specify URI for violation reports
 #  # p.report_uri "/csp-violation-report-endpoint"
-# end
+end
 
 # Report CSP violations to a specified URI
 # For further information see the following documentation: