sync: import files in markdown, relative to theme/exercice dir

admin/sync/exercice_hints.go

@@ -12,7 +12,6 @@ import (
 
 	"srs.epita.fr/fic-server/libfic"
 
-	"gopkg.in/russross/blackfriday.v2"
 	_ "golang.org/x/crypto/blake2b"
 )
 
@@ -74,7 +73,7 @@ func SyncExerciceHints(i Importer, exercice fic.Exercice) (errs []string) {
 				errs = append(errs, fmt.Sprintf("%q: challenge.txt: hint %s (%d): content and filename can't be empty at the same time", path.Base(exercice.Path), hint.Title, n+1))
 				continue
 			} else {
-				hint.Content = string(blackfriday.Run([]byte(hint.Content)))
+				hint.Content = ProcessMarkdown(i, hint.Content, exercice.Path)
 			}
 
 			// Import hint