Add event/memo/task "Save As" item to File menu.

Contacts view already has "File -> Save as vCard".

This adds "File -> Save as iCalendar" to Calendar/Memos/Tasks views.

modules/calendar/e-cal-shell-view-actions.h

@@ -85,6 +85,8 @@
 	E_SHELL_WINDOW_ACTION ((window), "event-open")
 #define E_SHELL_WINDOW_ACTION_EVENT_PRINT(window) \
 	E_SHELL_WINDOW_ACTION ((window), "event-print")
+#define E_SHELL_WINDOW_ACTION_EVENT_SAVE_AS(window) \
+	E_SHELL_WINDOW_ACTION ((window), "event-save-as")
 #define E_SHELL_WINDOW_ACTION_EVENT_SCHEDULE(window) \
 	E_SHELL_WINDOW_ACTION ((window), "event-schedule")
 #define E_SHELL_WINDOW_ACTION_EVENT_SCHEDULE_APPOINTMENT(window) \

ui/evolution-calendars.ui

@@ -3,6 +3,7 @@
     <menu action='file-menu'>
       <placeholder name='file-actions'>
         <menuitem action='event-open'/>
+        <menuitem action='event-save-as'/>
       </placeholder>
       <placeholder name='print-actions'>
 #if !EXPRESS

ui/evolution-memos.ui

@@ -3,6 +3,7 @@
     <menu action='file-menu'>
       <placeholder name='file-actions'>
         <menuitem action='memo-open'/>
+        <menuitem action='memo-save-as'/>
       </placeholder>
       <placeholder name='print-actions'>
         <menuitem action='memo-list-print-preview'/>

ui/evolution-tasks.ui

@@ -3,6 +3,7 @@
     <menu action='file-menu'>
       <placeholder name='file-actions'>
         <menuitem action='task-open'/>
+        <menuitem action='task-save-as'/>
       </placeholder>
       <placeholder name='print-actions'>
         <menuitem action='task-list-print-preview'/>