Refactoring Tickets

- Tickets now independent from registration
- Implemented money gem
#419

spec/factories/supporter_levels.rb

@@ -1,8 +0,0 @@
-FactoryGirl.define do
-  factory :supporter_level do
-    title 'Example Supporter Level'
-    url 'www.example.com'
-    conference
-  end
-
-end

spec/factories/ticket_purchases.rb

@@ -0,0 +1,8 @@
+FactoryGirl.define do
+  factory :ticket_purchase do
+    user
+    conference
+    ticket
+    quantity 10
+  end
+end

spec/factories/tickets.rb

@@ -0,0 +1,8 @@
+FactoryGirl.define do
+  factory :ticket do
+    title 'Business Ticket'
+    price_cents 1000
+    price_currency 'USD'
+    conference
+  end
+end