status-icon: update man

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
libgpaste-applet: add about

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
libgpaste: footer: add about

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
gnome-shell: add about

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
app-indicator: add man

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

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