Update name spaces for rake tasks to shorter 'ofn'.

lib/tasks/billing.rake

@@ -1,4 +1,4 @@
-namespace :openfoodnetwork do
+namespace :ofn do
   namespace :billing do
     desc 'Update enterprise user invoices'
     task update_account_invoices: :environment do

lib/tasks/cache.rake

@@ -1,6 +1,6 @@
 require 'open_food_network/products_cache_integrity_checker'
 
-namespace :openfoodnetwork do
+namespace :ofn do
   namespace :cache do
     desc 'check the integrity of the products cache'
     task :check_products_integrity => :environment do

lib/tasks/data.rake

@@ -1,4 +1,4 @@
-namespace :openfoodnetwork do
+namespace :ofn do
   namespace :data do
     desc "Adding relationships based on recent order cycles"
     task :create_order_cycle_relationships => :environment do

lib/tasks/dev.rake

@@ -1,4 +1,4 @@
-namespace :openfoodnetwork do
+namespace :ofn do
   namespace :dev do
     desc 'load sample data'
     task load_sample_data: :environment do

lib/tasks/enterprises.rake

@@ -1,6 +1,6 @@
 require 'csv'
 
-namespace :openfoodnetwork do
+namespace :ofn do
   namespace :dev do
     desc 'export enterprises to CSV'
     task :export_enterprises => :environment do

lib/tasks/specs.rake

@@ -1,4 +1,4 @@
-namespace :openfoodnetwork do
+namespace :ofn do
   namespace :specs do
     namespace :engines do
       def detect_engine_paths