Initial re-introduction of shortcuts

Adding back some shortcuts (via Shortcut element). Support mainly for
text formatting and navigation (go back).
10 jobs for 105-implement-webdav-sync in 5 minutes and 44 seconds (queued for 1 second)
Status Job ID Name Coverage
  Images
manual #33823976
allowed to fail manual
build_image_fedora
manual #33823977
allowed to fail manual
build_image_fedora_system
manual #33823978
allowed to fail manual
build_image_ubuntu
manual #33823979
allowed to fail manual
build_image_win32
manual #33823980
allowed to fail manual
build_image_win64
 
  Build
passed #33823981
linux_builtin

00:05:44

passed #33823982
linux_system

00:03:58

passed #33823983
ubuntu_appimage

00:04:57

passed #33823984
win32_build

00:02:06

passed #33823985
win64_build

00:02:16