v.0.7.10

• Fix order of start-end in view links (affects gnomAD link)
• Demonstration request in Druid JSON form: "druid-rq" ctx option for statunits
• more ctx options for variety (Symbol.sym-list, Symbol.sym-pattern)
• common namespace control for solution items: (FOROME-1572)
• fix problems in dataset names check in ds2ws, import_ws (FOROME-1565)
• finishing deprecation of function units from full unit list in ds_stat, dtree_stat