SCHEME CHANGE: Merge branch dami into default. A summary on the scheme changes: HWS and Lines tables are dropped and will be replaced by HWS_Lines and HWS_Points. The catchment table removed and will be replaced by a WMS Service. Hydr_boundaries has an added reference to boundary_kind sectie_kind and sobek_kind objects. Dem has a new column srid.

- Validation of the input values of an incoming feed() call