Validation moved to mongoengine

reports can now be queried by service_code
Upload waterpoints from a csv to the db via python

Specific report type Waterpoint added.
CSV file containing a list of waterpoints (data from: http://www.maji.go.tz/news_events/view_news_item.php?id=404&intVariationID=1&szTitle=Current)
sending of a report to the api from python using requests library