Hasty_Segment Modification

Modified Hasty_Segment to take away legacy fields related to Hasty_Line
tasks.  Changed fields in Hasty_Segments to: Area_Name,
Area_Description, AREA_ACRES, AREA_KM2.  Also changed the symbology to
just a single symbol to represent area.  Additionally, changed the
attributes assistant master table to auto calculate area (ACRES and KM2)
when a feature is created or changed.