Merge branch 'timezones' of git://github.com/epall/tracks into master.

Re-wrote all Date-related code to use Datetimes, created a migration to get rid of all date columns in the database, and got rid of Time.now calls that were not time zone-aware. Lots of time zone goodness!

spec/models/todo_spec.rb

@@ -10,7 +10,7 @@ describe Todo do
 
   def create_todo(attributes={})
     todo = Todo.new(valid_attributes(attributes))
-    todo.stub!(:user).and_return(mock_model(User, :date => Time.now))
+    todo.stub!(:user).and_return(mock_model(User, :date => Time.zone.now))
     todo.save!
     todo
   end
@@ -32,7 +32,7 @@ describe Todo do
 
   it 'ensures that show_from is a date in the future' do
     todo = Todo.new(valid_attributes)
-    todo.stub!(:user).and_return(mock_model(User, :date => Time.now))
+    todo.stub!(:user).and_return(mock_model(User, :date => Time.zone.now))
     todo.show_from = 3.days.ago
     todo.should have(1).error_on(:show_from)
   end

spec/models/user_spec.rb

@@ -185,8 +185,9 @@ describe User do
     user.save!
     user.create_preference
     user.preference.update_attribute('time_zone', 'Pacific Time (US & Canada)')
+#    Time.zone = 'Pacific Time (US & Canada)'
     Time.stub!(:now).and_return(Time.new.end_of_day - 20.minutes)
-    todo = user.todos.build(:description => 'test task', :context => context, :show_from => user.date + 1)
+    todo = user.todos.build(:description => 'test task', :context => context, :show_from => user.date + 1.days)
     todo.save!
 
     user.deferred_todos.find_and_activate_ready