version 0.5.0

[pierre-dargham]

• New commands : deploy, media:push, media:dump
• Initialize git repository after installation
• Fix wp-cubi-admin-bar
• Fix default log and web/media permissions
• Remove deprecated github.com/wp-globalis-tools dependencies
• Bump WordPress version: 4.9.7
• Bump globalis/wp-cubi-helpers version: 0.3.0 (new cache and debug helpers + type declarations)
• Bump other composer dependencies versions