[Azoth] Proper add bookmark window title.
[Azoth CH] Proper names for available private chats.
[Zalil] PendingUploadBase::MakeStandardMultipart().
[Azoth] Removed obsolete stuff from BookmarksManagerDialog.
[Azoth] Moved some to BookmarksManagerDialog::ReloadModel().
[Azoth] Directly call ReloadModel() in BM manager widget.
[Azoth] Check for identifying data emptiness in BookmarkEditDialog.
[Azoth] Moved parts of code to AddBookmark().
[Azoth] Fixed BookmarksManagerDialog::SuggestSaving().