update fonts

resource/css/_layout.scss

@@ -1,5 +1,4 @@
 .crowi { // {{{
-  font-family: Lato, -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
   h1, h2, h3, h4, h5, h6 {
     font-weight: 500;
   }

resource/css/_utilities.scss

@@ -56,9 +56,9 @@ $link-hover-color:      darken($link-color, 15%);
 // // Typography
 // // -------------------------
 //
-// $font-family-sans-serif:  "Helvetica Neue", Helvetica, Arial, sans-serif;
+$font-family-sans-serif:  Lato, -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
 // $font-family-serif:       Georgia, "Times New Roman", Times, serif;
-// $font-family-monospace:   Monaco, Menlo, Consolas, "Courier New", monospace;
+$font-family-monospace:   Monaco, Menlo, Consolas, "Courier New", MeiryoKe_Console, monospace;
 // $font-family-base:        $font-family-sans-serif;
 //
 // $font-size-base:          14px;