Added the hability to create and handle collection files. A collection file contains a directory structure

and files that RS can DL seamlessly in the DL directory. Collection files are created from shared files
and can be handled by righ-clicking on them in Transfers and Shared files. Handling is based on the extension,
that must be "rscollection".


git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@4664 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/SharedFilesDialog.h

@@ -58,6 +58,7 @@ private slots:
   void sharedDirTreeWidgetContextMenu( QPoint point );
 
   void downloadRemoteSelected();
+  void createCollectionFile();
   void addMsgRemoteSelected();
 
   void copyLinkRemote();
@@ -115,6 +116,7 @@ private:
 
   /** Defines the actions for the context menu for QTreeWidget */
   QAction* openfileAct;
+  QAction* createcollectionfileAct;
   QAction* openfolderAct;
   QAction* copyremotelinkAct;
   QAction* copylinklocalAct;