adds gist url tracking to local storage, for user convenience

Слиты nikitronn запросил слияние gist_history в master

Created by: zeffii

  • Each time your upload an anonymous gist this generates or updates a file in \datafiles\sverchok , called MMMM_DD_gist_uploads.csv.
  • small fix in ob3
  • small fix to gist to layout code.