Translate 10% to language Català

index.html
includes\welcome.md
_layouts\default.html
_layouts\page.html
_posts\01-01-01-Getting-Started.md
_posts\01-02-01-Use-the-Current-Stable-Version.md
_posts\01-03-01-Built-in-Web-Server.md
_posts\01-04-01-Mac-Setup.md
_posts\01-05-01-Windows-Setup.md
Transate to language Catala