Add .well-known redirects to .htaccess (#194)

Author: smehrbrodt

public/.htaccess

@@ -20,6 +20,10 @@ DirectoryIndex index.php
 <IfModule mod_rewrite.c>
     RewriteEngine On
 
+    # Add .well-known redirections
+    RewriteRule ^\.well-known/carddav /dav/ [R=301,L]
+    RewriteRule ^\.well-known/caldav /dav/ [R=301,L]
+
     # Determine the RewriteBase automatically and set it as environment variable.
     # If you are using Apache aliases to do mass virtual hosting or installed the
     # project in a subdirectory, the base path will be prepended to allow proper