Update xorm to v1 (#323)

Fix limit for databases other than sqlite

go mod tidy && go mod vendor

Remove unneeded break statements

Make everything work with the new xorm version

Fix xorm logging

Fix lint

Fix redis init

Fix using id field

Fix database init for testing

Change default database log level

Add xorm logger

Use const for postgres

go mod tidy

Merge branch 'master' into update/xorm

# Conflicts:
#	go.mod
#	go.sum
#	vendor/modules.txt

go mod vendor

Fix loading fixtures for postgres

Go mod vendor1

Update xorm to version 1

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/323

vendor/xorm.io/xorm/caches/encode.go

@@ -0,0 +1,58 @@
+// Copyright 2020 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package caches
+
+import (
+	"bytes"
+	"crypto/md5"
+	"encoding/gob"
+	"encoding/json"
+	"fmt"
+	"io"
+)
+
+// md5 hash string
+func Md5(str string) string {
+	m := md5.New()
+	io.WriteString(m, str)
+	return fmt.Sprintf("%x", m.Sum(nil))
+}
+func Encode(data interface{}) ([]byte, error) {
+	//return JsonEncode(data)
+	return GobEncode(data)
+}
+
+func Decode(data []byte, to interface{}) error {
+	//return JsonDecode(data, to)
+	return GobDecode(data, to)
+}
+
+func GobEncode(data interface{}) ([]byte, error) {
+	var buf bytes.Buffer
+	enc := gob.NewEncoder(&buf)
+	err := enc.Encode(&data)
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+func GobDecode(data []byte, to interface{}) error {
+	buf := bytes.NewBuffer(data)
+	dec := gob.NewDecoder(buf)
+	return dec.Decode(to)
+}
+
+func JsonEncode(data interface{}) ([]byte, error) {
+	val, err := json.Marshal(data)
+	if err != nil {
+		return nil, err
+	}
+	return val, nil
+}
+
+func JsonDecode(data []byte, to interface{}) error {
+	return json.Unmarshal(data, to)
+}