use blank instead of empty for the person#name helper

app/models/person.rb

@@ -68,7 +68,7 @@ class Person
   end
 
   def name
-    @name ||= if profile.first_name.nil? || profile.first_name.empty?
+    @name ||= if profile.first_name.nil? || profile.first_name.blank?
                 self.diaspora_handle
               else
                 "#{profile.first_name.to_s} #{profile.last_name.to_s}"

spec/helpers/application_helper_spec.rb

@@ -216,6 +216,28 @@ describe ApplicationHelper do
       end
     end
 
+    describe '#person_link' do
+      before do
+      @person = Factory(:person)
+      end
+      it 'includes the name of the person if they have a first name' do
+        person_link(@person).should include @person.profile.first_name
+      end
+
+      it 'uses diaspora handle if the person has no first or last name' do
+        @person.profile.first_name = nil
+        @person.profile.last_name = nil
+
+        person_link(@person).should include @person.diaspora_handle
+      end
+    
+      it 'uses diaspora handle if first name and first name are rails#blank?' do
+        @person.profile.first_name = " " 
+        @person.profile.last_name = " "
+
+        person_link(@person).should include @person.diaspora_handle
+      end
+    end
     context 'performance' do
       before do
         @message = "HHello,Hello_, I _am a strong robot.*Hello, I am *a strong robot.Hello, I am a strong robot.Hello, I am a strong robot.Hello, I am a strong robot.Hello, I am a **strong robot.Hello, I am _a _strong *robot**.Hello*, I am a strong "