Fix tests

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

spec/helpers/application_helper_spec.rb

@@ -62,11 +62,11 @@ describe ApplicationHelper do
 
     it "should return a generic avatar path when Gravatar is disabled" do
       Gitlab.config.gravatar.stub(:enabled).and_return(false)
-      gravatar_icon(user_email).should == 'no_avatar.png'
+      gravatar_icon(user_email).should == '/assets/no_avatar.png'
     end
 
     it "should return a generic avatar path when email is blank" do
-      gravatar_icon('').should == 'no_avatar.png'
+      gravatar_icon('').should == '/assets/no_avatar.png'
     end
 
     it "should return default gravatar url" do