Clear image (#722)

* Allow clearing of tag images
* Allow clearing of studio images
* Allow clearing of performer images
* Allow clearing of movie images
* Add filtering for missing images

pkg/utils/crypto.go

@@ -4,6 +4,7 @@ import (
 	"crypto/md5"
 	"crypto/rand"
 	"fmt"
+	"hash/fnv"
 	"io"
 	"os"
 )
@@ -38,3 +39,9 @@ func GenerateRandomKey(l int) string {
 	rand.Read(b)
 	return fmt.Sprintf("%x", b)
 }
+
+func IntFromString(str string) uint64 {
+	h := fnv.New64a()
+	h.Write([]byte(str))
+	return h.Sum64()
+}