l10n: add en, de, ja and fr

static/font/PixelMPlus/LICENSE_E

@@ -0,0 +1,16 @@
+M+ FONTS                                Copyright (C) 2002-2013 M+ FONTS PROJECT
+
+-
+
+LICENSE_E
+
+
+
+
+These fonts are free software.
+Unlimited permission is granted to use, copy, and distribute them, with
+or without modification, either commercially or noncommercially.
+THESE FONTS ARE PROVIDED "AS IS" WITHOUT WARRANTY.
+
+
+http://mplus-fonts.sourceforge.jp/mplus-outline-fonts/

static/font/SOURCES

@@ -1,2 +1,3 @@
 Monocraft:  https://idreesinc.itch.io/monocraft
-Pixeloid:   https://ggbot.itch.io/pixeloid-font
+Pixeloid:   https://ggbot.itch.io/pixeloid-font
+PixelM+:    https://itouhiro.hatenablog.com/entry/20130602/font

static/style/main.scss

@@ -34,7 +34,7 @@ body {
   display: flex;
   flex-direction: column;
   background-color: $base;
-  font-family: Pixeloid;
+  font-family: Pixeloid, PixelMPlus;
   color: $text;
   width: 100%;
   height: 100%;
@@ -166,3 +166,13 @@ footer {
     url("/static/font/Pixeloid/otf/Sans-Bold.otf") format("opentype");
   font-weight: bold;
 }
+
+@font-face {
+  font-family: PixelMPlus;
+  src: url("/static/font/PixelMPlus/Regular.ttf");
+}
+@font-face {
+  font-family: PixelMPlus;
+  src: url("/static/font/PixelMPlus/Bold.ttf");
+  font-weight: bold;
+}