[#4477] Added model and migration for FixedBudget.

app/models/deliverable.rb

@@ -8,6 +8,7 @@ class Deliverable < ActiveRecord::Base
   belongs_to :manager, :class_name => 'User', :foreign_key => 'manager_id'
   has_many :labor_budgets
   has_many :overhead_budgets
+  has_many :fixed_budgets
   has_many :issues
 
   accepts_nested_attributes_for :labor_budgets

app/models/fixed_budget.rb

@@ -0,0 +1,10 @@
+class FixedBudget < ActiveRecord::Base
+  unloadable
+
+  # Associations
+  belongs_to :deliverable
+
+  # Validations
+
+  # Accessors
+end