Mannord integration

Integration of mannord module into back end of h. To flag an annotation as spam one should sent request [root]/act/flag_spam/[annotation_id]. Request to undo flag as spam is [root]/act/undo_flag_spam/[annotation_id].
The goal of this pull request is to facilitate code and design discussion, as advised here http://blog.quickpeople.co.uk/2013/07/10/useful-github-patterns/.