AttachmentStore now has its own runloop, can download attachments

kordophoned/include/net.buzzert.kordophonecd.Server.xml

@@ -89,15 +89,27 @@
 
         <method name="GetAttachmentInfo">
             <arg type="s" name="attachment_id" direction="in"/>
-            <arg type="(sbu)" name="attachment_info" direction="out"/>
+            <arg type="(ssbb)" name="attachment_info" direction="out"/>
+            
             <annotation name="org.freedesktop.DBus.DocString"
-                        value="Returns attachment info: (file_path: string, downloaded: bool, file_size: uint64)"/>
+                        value="Returns attachment info: 
+                            - path: string
+                            - preview_path: string
+                            - downloaded: boolean
+                            - preview_downloaded: boolean
+                        "/>
         </method>
 
         <method name="DownloadAttachment">
             <arg type="s" name="attachment_id" direction="in"/>
+            <arg type="b" name="preview" direction="in"/>
+
             <annotation name="org.freedesktop.DBus.DocString"
-                        value="Initiates download of the specified attachment if not already downloaded."/>
+                        value="Initiates download of the specified attachment if not already downloaded.
+                        Arguments: 
+                        attachment_id: the attachment GUID
+                        preview: whether to download the preview (true) or full attachment (false)
+                        "/>
         </method>
 
         <signal name="AttachmentDownloadStarted">