Fix use as library - V1.1 RC

[nmellado]

Current changes:

• Build system
  • Add install target in cmake
  • Save binaries compiled by AppVeyor integration system as Artifacts
• Devel
  • Update include directive relatively to super4pcs root dir.
  • Add silent mode in matcher to avoid unwanted logging on standard output. This is implemented by adding a visitor in the matcher main loop, and set it as a logger in the Super4pcs main app.
• Demos, scripts and assets
  • assets are now added to the install folder, including downloaded datasets
  • demo scripts have been updated to work directly after installation. Windows batch scripts have been added.
• Dependencies
  • Chealpix dependency is marked as deprecated: it slows down the approach and reduce it's robustness. Consequently, Chealpix is still built in CI but not tested.