Adding to Redirect class for handling redirection
Improves Redirect set http status code. Closes #242
Uncommented the use statement, fixes #250
Update UploadFormat.php

The modification permits to define generic mime types with the following declaration:
UploadFormat::$allowedMimeTypes = array("audio/*", "video/*", "image/*");

This is consistent with the "accept" attribute of the HTML input tag.
<input type="file" accept="audio/*|video/*|image/*|MIME_type" />

Regards,

Olivier
Improves CommentParser to remove leading `\` Fixes 249
Improves HtmlFormat to have session and flash message handling
Fix undefined index error