Update mime types in QubitDigitalObject, fixes #4880

Squashed commit of the following:

commit b6b3cc46b1e119dbc4da106d5c632b431c987109
Author: José Raddaoui Marín <raddaouimarin@gmail.com>
Date:   Sun Jul 7 21:50:42 2013 +0200

    Remove duplicated mime types

commit 7e435fa61c15c4cb0dffabf8e0ff5f6279366498
Author: José Raddaoui Marín <raddaouimarin@gmail.com>
Date:   Sun Jul 7 21:42:50 2013 +0200

    Add new types parsed from Apache's mime.types