Improve coverage

[eddy-geek]

• Coverage of WAlps & CAlps boxes:

• [ ] WAlps: Missing french areas: 39,01,84,13 (Jura,Ain,Vaucluse,Bouches-du-Rhone)

• [ ] CAlps: Missing Italian Veneto

• [ ] CAlps: Higher quality for Vorarlberg (5m instead of 10m)

• Additional coverage

• [ ] Eastern alps. See openslopemap data-sources

  • [ ] IT: Friuli-Venezia Giulia
  • [ ] Austria: Salzburg, Carinthia, Styria
  • [ ] Slovenia : Sony (edit: currently down)

• [ ] Pyrenees

• [ ] Fill with SRTM data