Readded better favicon.

web/static/favicon/about.txt

@@ -0,0 +1,6 @@
+This favicon was generated using the following font:
+
+- Font Title: Arimo
+- Font Author: undefined
+- Font Source: https://fonts.gstatic.com/s/arimo/v34/P5sfzZCDf9_T_3cV7NCUECyoxNk338xsBxDAVQI4aA.ttf
+- Font License: undefined)

web/static/favicon/site.webmanifest

@@ -0,0 +1 @@
+{"name":"","short_name":"","icons":[{"src":"/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#ffffff","background_color":"#ffffff","display":"standalone"}