changed s3 urls to using the folder convention

spec/components/s3_spec.rb

@@ -17,14 +17,15 @@ describe S3 do
     let(:image_info) { FastImage.new(file) }
 
     before(:each) do
-      SiteSetting.stubs(:s3_upload_bucket).returns("s3_upload_bucket")
+      SiteSetting.stubs(:s3_upload_bucket).returns("S3_Upload_Bucket")
       SiteSetting.stubs(:s3_access_key_id).returns("s3_access_key_id")
       SiteSetting.stubs(:s3_secret_access_key).returns("s3_secret_access_key")
       Fog.mock!
     end
 
     it 'returns the url of the S3 upload if successful' do
-      S3.store_file(file, "SHA", 1).should == '//s3_upload_bucket.s3.amazonaws.com/1SHA.png'
+      # NOTE: s3 bucket's name are case sensitive so we can't use it as a subdomain...
+      S3.store_file(file, "SHA", 1).should == '//s3.amazonaws.com/S3_Upload_Bucket/1SHA.png'
     end
 
     after(:each) do