Use Sarabun with all charsets (#400)

We selected Sarabun because it supports many charsets,
but we used a version that only supports latin.
Now that we add support for more languages, the font
has to support this (otherwise I'm getting a weird fallback font).

Author: ByteHamster

_sass/_font.scss

@@ -4,8 +4,7 @@
   font-family: 'Sarabun';
   font-style: normal;
   font-weight: 400;
-  src: url('../fonts/sarabun/sarabun-v15-latin-regular.woff2') format('woff2'), /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
-       url('../fonts/sarabun/sarabun-v15-latin-regular.ttf') format('truetype'); /* Chrome 4+, Firefox 3.5+, IE 9+, Safari 3.1+, iOS 4.2+, Android Browser 2.2+ */
+  src: url('../fonts/sarabun/Sarabun-Regular.ttf') format('truetype');
 }
 
 /* sarabun-500 - latin */
@@ -14,8 +13,7 @@
   font-family: 'Sarabun';
   font-style: normal;
   font-weight: 500;
-  src: url('../fonts/sarabun/sarabun-v15-latin-500.woff2') format('woff2'), /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
-       url('../fonts/sarabun/sarabun-v15-latin-500.ttf') format('truetype'); /* Chrome 4+, Firefox 3.5+, IE 9+, Safari 3.1+, iOS 4.2+, Android Browser 2.2+ */
+  src: url('../fonts/sarabun/Sarabun-Medium.ttf') format('truetype');
 }
 
 /* sarabun-600 - latin */
@@ -24,8 +22,7 @@
   font-family: 'Sarabun';
   font-style: normal;
   font-weight: 600;
-  src: url('../fonts/sarabun/sarabun-v15-latin-600.woff2') format('woff2'), /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
-       url('../fonts/sarabun/sarabun-v15-latin-600.ttf') format('truetype'); /* Chrome 4+, Firefox 3.5+, IE 9+, Safari 3.1+, iOS 4.2+, Android Browser 2.2+ */
+  src: url('../fonts/sarabun/Sarabun-SemiBold.ttf') format('truetype');
 }
 
 /* sarabun-700 - latin */
@@ -34,6 +31,5 @@
   font-family: 'Sarabun';
   font-style: normal;
   font-weight: 700;
-  src: url('../fonts/sarabun/sarabun-v15-latin-700.woff2') format('woff2'), /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
-       url('../fonts/sarabun/sarabun-v15-latin-700.ttf') format('truetype'); /* Chrome 4+, Firefox 3.5+, IE 9+, Safari 3.1+, iOS 4.2+, Android Browser 2.2+ */
+  src: url('../fonts/sarabun/Sarabun-Bold.ttf') format('truetype');
 }