Allow attaching files to items

Users can now attach (and detach) files to complex items (images, notes,
todo lists and todos). The attached files can be opened from within the
app.
17 jobs for 38-allow-attaching-files-to-items in 11 minutes and 56 seconds (queued for 9 seconds)
Status Job ID Name Coverage
  Images
manual #41023247
allowed to fail manual
build_image_fedora
manual #41023248
allowed to fail manual
build_image_fedora_system
manual #41023249
allowed to fail manual
build_image_ubuntu
manual #41023250
allowed to fail manual
build_image_win32
manual #41023251
allowed to fail manual
build_image_win64
 
  Build
passed #41023252
linux_builtin

00:03:50

passed #41023253
linux_system

00:03:14

manual #41023259
macos allowed to fail manual
macos
passed #41023254
ubuntu_appimage

00:10:02

passed #41023255
win32_build

00:05:04

manual #41023257
windows allowed to fail manual
win32_vs_build
passed #41023256
win64_build

00:03:23

manual #41023258
windows allowed to fail manual
win64_vs_build
 
  Installer
passed #41023260
win32_installer

00:01:42

manual #41023262
allowed to fail manual
win32_vs_installer
passed #41023261
win64_installer

00:01:48

manual #41023263
allowed to fail manual
win64_vs_installer