[geary] Hook up attach file shortcut, add it to user guide. Bug 743565.

[Michael Gratton <mjog src gnome org>]

commit 32a7f76360bd0d6fa0967e4cd1df6713193e7b39
Author: Michael James Gratton <mike vee net>
Date:   Thu Jun 9 00:20:23 2016 +1000

    Hook up attach file shortcut, add it to user guide. Bug 743565.

 help/C/shortcuts.page       |    8 ++++++--
 ui/composer_accelerators.ui |    4 +++-
 2 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/help/C/shortcuts.page b/help/C/shortcuts.page
index 67a0f68..1092ab3 100644
--- a/help/C/shortcuts.page
+++ b/help/C/shortcuts.page
@@ -120,12 +120,16 @@
                <td><p> <keyseq><key>Ctrl</key><key>Shift</key><key>G</key></keyseq> </p></td>
        </tr>
      </table>
-    
+
     <section id="composer">
         <title>Composer shortcuts</title>
         <p>These shortcuts are active whenever focus is in a composer.</p>
         <table frame="all" rules="rows">
             <tr>
+                <td><p>Attach file</p></td>
+                <td><p><keyseq><key>Ctrl</key><key>T</key></keyseq></p></td>
+            </tr>
+            <tr>
                 <td><p>Quote text</p></td>
                 <td><p> <keyseq><key>Ctrl</key><key>]</key></keyseq> </p></td>
             </tr>
@@ -142,7 +146,7 @@
                 <td><p> <keyseq><key>Ctrl</key><key>D</key></keyseq> </p></td>
             </tr>
         </table>
-        
+
         <p>These shortcuts are only active in composers in rich text mode.</p>
         <table frame="all" rules="rows">
             <tr>
diff --git a/ui/composer_accelerators.ui b/ui/composer_accelerators.ui
index 64d5c47..7cd1923 100644
--- a/ui/composer_accelerators.ui
+++ b/ui/composer_accelerators.ui
@@ -1,7 +1,9 @@
 <ui>
     <accelerator action="undo" />
     <accelerator action="redo" />
-    
+
+    <accelerator action="add attachment" />
+
     <accelerator action="cut" />
     <accelerator action="copy" />
     <accelerator action="copy link" />