Update vendor (github.com/mattermost)

vendor/github.com/mattermost/platform/model/utils.go

@@ -12,12 +12,14 @@ import (
 	"io"
 	"io/ioutil"
 	"net"
+	"net/http"
 	"net/mail"
 	"net/url"
 	"regexp"
 	"strconv"
 	"strings"
 	"time"
+	"unicode"
 
 	goi18n "github.com/nicksnyder/go-i18n/i18n"
 	"github.com/pborman/uuid"
@@ -90,7 +92,7 @@ func AppErrorFromJson(data io.Reader) *AppError {
 	if err == nil {
 		return &er
 	} else {
-		return NewLocAppError("AppErrorFromJson", "model.utils.decode_json.app_error", nil, "body: "+str)
+		return NewAppError("AppErrorFromJson", "model.utils.decode_json.app_error", nil, "body: "+str, http.StatusInternalServerError)
 	}
 }
 
@@ -106,18 +108,6 @@ func NewAppError(where string, id string, params map[string]interface{}, details
 	return ap
 }
 
-func NewLocAppError(where string, id string, params map[string]interface{}, details string) *AppError {
-	ap := &AppError{}
-	ap.Id = id
-	ap.params = params
-	ap.Message = id
-	ap.Where = where
-	ap.DetailedError = details
-	ap.StatusCode = 500
-	ap.IsOAuth = false
-	return ap
-}
-
 var encoding = base32.NewEncoding("ybndrfg8ejkmcpqxot1uwisza345h769")
 
 // NewId is a globally unique identifier.  It is a [A-Z0-9] string 26
@@ -283,11 +273,7 @@ func GetServerIpAddress() string {
 }
 
 func IsLower(s string) bool {
-	if strings.ToLower(s) == s {
-		return true
-	}
-
-	return false
+	return strings.ToLower(s) == s
 }
 
 func IsValidEmail(email string) bool {
@@ -492,3 +478,17 @@ func IsValidNumberString(value string) bool {
 
 	return true
 }
+
+func IsValidId(value string) bool {
+	if len(value) != 26 {
+		return false
+	}
+
+	for _, r := range value {
+		if !unicode.IsLetter(r) && !unicode.IsNumber(r) {
+			return false
+		}
+	}
+
+	return true
+}