calendar-server: Add .desktop file for evolution calendar

When selecting "Open Calendar" in the date menu, the configured
application is launched via command line, so we don't get any
startup notification. In order to fix the issue at least for our
default calendar, add a hidden .desktop file for evolution's
calendar component.

https://bugzilla.gnome.org/show_bug.cgi?id=677907

src/Makefile-calendar-server.am

@@ -8,6 +8,12 @@ gnome_shell_calendar_server_SOURCES =								\
 	calendar-server/gnome-shell-calendar-server.c						\
 	$(NULL)
 
+desktopdir=$(datadir)/applications
+desktop_DATA = $(desktop_in_files:.desktop.in=.desktop)
+desktop_in_files = calendar-server/evolution-calendar.desktop.in
+
+@INTLTOOL_DESKTOP_RULE@
+
 gnome_shell_calendar_server_CFLAGS =		\
 	-I$(top_srcdir)/src			\
 	-DPREFIX=\""$(prefix)"\"		\
@@ -26,3 +32,6 @@ EXTRA_DIST += 							  \
 	calendar-server/README					  \
 	calendar-server/org.gnome.Shell.CalendarServer.service.in \
 	$(NULL)
+
+CLEANFILES = \
+	$(desktop_DATA)

src/calendar-server/evolution-calendar.desktop.in.in

@@ -0,0 +1,7 @@
+[Desktop Entry]
+_Name=Evolution Calendar
+Exec=evolution -c calendar
+Icon=evolution
+NoDisplay=true
+Type=Application
+StartupNotify=true