0.9.10claws55

0.9.10claws55

* src/gtk/prefswindow.c
        change window type to DIALOG

* src/folder.[ch]
* src/folderview.c
* src/news_gtk.c
        o add folder_remove()
        o change FolderUpdate hook flag names (NEW -> ADD, DESTROY -> REMOVE)
        o add new "sort" field to Folder, no longer sort folders by type
          higher sort values will be first in the folder list, new folders get 0
          and will be added to the end

* src/mainwindow.c
* src/gtk/Makefile.am
* src/gtk/foldersort.(c|h|glade)                        ** NEW **
        add dialog to allow users to change the folder order