Adds setting to enable or disable help page

db/dev_seeds/settings.rb

@@ -49,6 +49,7 @@ section "Creating Settings" do
   Setting.create(key: 'feature.public_stats', value: "true")
   Setting.create(key: 'feature.guides', value: nil)
   Setting.create(key: 'feature.user.skip_verification', value: "true")
+  Setting.create(key: 'feature.help_page', value: "true")
 
   Setting.create(key: 'per_page_code_head', value: "")
   Setting.create(key: 'per_page_code_body', value: "")

db/seeds.rb

@@ -89,6 +89,7 @@ Setting['feature.map'] = nil
 Setting['feature.allow_images'] = true
 Setting['feature.allow_attached_documents'] = true
 Setting['feature.guides'] = nil
+Setting['feature.help_page'] = true
 
 # Spending proposals feature flags
 Setting['feature.spending_proposal_features.voting_allowed'] = nil