Changed profit to take into account the overhead along with the total labor cost

when profit is a %

* Fixed Models
* Fixed JS Calculator
* Cleaned up specs to access attributes directly

  #1349

app/models/deliverable.rb

@@ -68,8 +68,16 @@ class Deliverable < ActiveRecord::Base
     return ((self.spent / self.budget) * 100).round
   end
   
+  def overhead
+    return read_attribute(:overhead) unless read_attribute(:overhead).nil?
+    return ((read_attribute(:overhead_percent).to_f / 100.0) * self.labor_budget) unless read_attribute(:overhead_percent).nil?
+    return 0
+  end
+  
   # Setter for the overhead to take an Dollar amount or a %.
   def overhead=(v)
+    return if v.nil?
+
     if v.match(/%/)
       # Clear amount since this is a %
       write_attribute(:overhead, nil)
@@ -84,6 +92,8 @@ class Deliverable < ActiveRecord::Base
 
   # Setter for the materials to take an Dollar amount or a %.
   def materials=(v)
+    return if v.nil?
+
     if v.match(/%/)
       # Clear amount since this is a %
       write_attribute(:materials, nil)

app/models/fixed_deliverable.rb

@@ -16,7 +16,7 @@ class FixedDeliverable < Deliverable
     if read_attribute(:profit_percent).nil?
       return super
     else
-      return (read_attribute(:profit_percent).to_f / 100.0) * read_attribute(:fixed_cost)
+      return (read_attribute(:profit_percent).to_f / 100.0) * (read_attribute(:fixed_cost) + self.overhead)
     end
   end
   

app/models/hourly_deliverable.rb

@@ -35,7 +35,9 @@ class HourlyDeliverable < Deliverable
     if read_attribute(:profit_percent).nil?
       return super
     else
-      return (read_attribute(:profit_percent).to_f / 100.0) * (read_attribute(:cost_per_hour) * read_attribute(:total_hours))
+      labor = (read_attribute(:cost_per_hour) * read_attribute(:total_hours))
+      
+      return (read_attribute(:profit_percent).to_f / 100.0) * (labor + self.overhead)
     end
   end