correction: date -> reference_date
Merge pull request #332 from aseemmittal/dirty

Modifies add distance for suspense order.
Merge remote-tracking branch 'upstream/dirty' into dirty
adds functionality to enable selection of type of work.
Merge pull request #333 from jasvir99/dirty

adds functionality to enable selection of type of work.
Modifies Proforma.
Updates date to reference_date in bill display.