Replace thin Montserrat with light to improve readability.

opentech/static_src/src/sass/apply/base/_typography.scss

@@ -71,7 +71,7 @@ small, .milli {
     font-family: 'montserrat';
     font-style: normal;
     font-weight: 200;
-    src: url('../../fonts/montserrat/Montserrat-Thin.woff') format('woff');
+    src: url('../../fonts/montserrat/Montserrat-Light.woff') format('woff');
     text-rendering: optimizeLegibility;
 }
 

opentech/static_src/src/sass/public/base/_typography.scss

@@ -77,7 +77,7 @@ small, .milli {
     font-family: 'montserrat';
     font-style: normal;
     font-weight: 200;
-    src: url('../../fonts/montserrat/Montserrat-Thin.woff') format('woff');
+    src: url('../../fonts/montserrat/Montserrat-Light.woff') format('woff');
     text-rendering: optimizeLegibility;
 }