Authorize data: images in CSP header (#1138)

lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/DefaultValues.pm

@@ -28,7 +28,7 @@ sub defaultValues {
         'cspConnect'               => '\'self\'',
         'cspDefault'               => '\'self\'',
         'cspFont'                  => '\'self\'',
-        'cspImg'                   => '\'self\'',
+        'cspImg'                   => '\'self\' data:',
         'cspScript'                => '\'self\'',
         'cspStyle'                 => '\'self\'',
         'dbiAuthnLevel'            => 2,

lemonldap-ng-manager/lib/Lemonldap/NG/Manager/Attributes.pm

@@ -813,7 +813,7 @@ qr/(?:(?:https?):\/\/(?:(?:(?:(?:(?:(?:[a-zA-Z0-9][-a-zA-Z0-9]*)?[a-zA-Z0-9])[.]
             'type'    => 'text'
         },
         'cspImg' => {
-            'default' => '\'self\'',
+            'default' => '\'self\' data:',
             'type'    => 'text'
         },
         'cspScript' => {

lemonldap-ng-manager/lib/Lemonldap/NG/Manager/Build/Attributes.pm

@@ -467,7 +467,7 @@ sub attributes {
         },
         cspImg => {
             type          => 'text',
-            default       => "'self'",
+            default       => "'self' data:",
             documentation => 'Image source for Content-Security-Policy',
         },
         cspScript => {