gnome-shell: 3.7.4

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
Release GPaste 2.99

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
add download url

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>