[#6574] Add a TimeEntryActivity to OverheadBudgets

app/models/deliverable.rb

@@ -31,7 +31,8 @@ class Deliverable < ActiveRecord::Base
   delegate "open?", :to => :contract, :prefix => true, :allow_nil => true
   delegate "closed?", :to => :contract, :prefix => true, :allow_nil => true
   delegate "locked?", :to => :contract, :prefix => true, :allow_nil => true
-
+  delegate :project, :to => :contract, :allow_nil => true
+  
   # Callbacks
   before_destroy :block_on_locked_contracts
   before_destroy :block_on_closed_contracts

app/models/overhead_budget.rb

@@ -3,8 +3,10 @@ class OverheadBudget < ActiveRecord::Base
 
   # Associations
   belongs_to :deliverable
+  belongs_to :time_entry_activity
 
   # Validations
+  validates_presence_of :time_entry_activity_id
 
   # Accessors
   include DollarizedAttribute