Fix services integration after omniauth bump (#173)

Gemfile

@@ -97,3 +97,5 @@ group :development, :test do
 end
 
 gem "webpacker", "~> 5.2"
+
+gem "omniauth-rails_csrf_protection", "~> 1.0"

Gemfile.lock

@@ -327,6 +327,9 @@ GEM
     omniauth-oauth (1.2.0)
       oauth
       omniauth (>= 1.0, < 3)
+    omniauth-rails_csrf_protection (1.0.0)
+      actionpack (>= 4.2)
+      omniauth (~> 2.0)
     omniauth-tumblr (1.2)
       multi_json
       omniauth-oauth (~> 1.0)
@@ -596,6 +599,7 @@ DEPENDENCIES
   mini_magick
   newrelic_rpm
   omniauth
+  omniauth-rails_csrf_protection (~> 1.0)
   omniauth-tumblr
   omniauth-twitter
   pg

app/views/settings/_services.haml

@@ -7,7 +7,7 @@
 
     - APP_CONFIG['sharing'].each do |service, service_options|
       - if service_options['enabled'] && @services.none? { |x| x.provider == service.to_s }
-        %p= link_to t('views.settings.service.connect', service: service.capitalize), "/auth/#{service}"
+        %p= link_to t('views.settings.service.connect', service: service.capitalize), "/auth/#{service}", method: :post
 
   - if @services.count.positive?
     %ul.list-group