Move cacheControl func into handle.go file

cache.go

@@ -11,7 +11,6 @@
 package writefreely
 
 import (
-	"net/http"
 	"sync"
 	"time"
 )
@@ -68,10 +67,3 @@ func GetPostsCache(userID int64) *[]PublicPost {
 	}
 	return pci.Posts
 }
-
-func cacheControl(next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Cache-Control", "public, max-age=604800, immutable")
-		next.ServeHTTP(w, r)
-	})
-}

handle.go

@@ -926,3 +926,10 @@ func sendRedirect(w http.ResponseWriter, code int, location string) int {
 	w.WriteHeader(code)
 	return code
 }
+
+func cacheControl(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Cache-Control", "public, max-age=604800, immutable")
+		next.ServeHTTP(w, r)
+	})
+}