Use Unicode typography in new translatable strings

See https://developer.gnome.org/hig/stable/typography.html
7 jobs from wip/piotrdrag/unicode-typography-180625 in 9 minutes and 38 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #53442
cross-android_api21_arm64

00:02:03

passed #53443
cross-mingw64

00:02:37

passed #53447
fedora-x86_64

00:02:49

passed #53444
win32
msys2-mingw32

00:06:03

passed #53445
win32
vs2017-x64

00:06:07

failed #53441
fedora-x86_64

00:03:09

 
  Coverage
passed #53446
coverage

00:00:41

77.1%