Fix #1263: GTK UI not remembering column width

Removing a column from the treeview on shutdown causes all the
column widths to be zero which are saved to the state file.

The workaround is to not save the state file if all columns are zero.

deluge/ui/gtkui/listview.py

@@ -272,6 +272,9 @@ class ListView:
         # A list of ListViewColumnStates
         state = []
 
+        # Workaround for all zero widths after removing column on shutdown
+        if not any(c.get_width() for c in self.treeview.get_columns()): return
+
         # Get the list of TreeViewColumns from the TreeView
         for counter, column in enumerate(self.treeview.get_columns()):
             # Append a new column state to the state list

deluge/ui/gtkui/torrentview.py

@@ -474,6 +474,11 @@ class TorrentView(listview.ListView, component.Component):
         """
         listview.ListView.save_state(self, "torrentview.state")
 
+    def remove_column(self, header):
+        """Removes the column with the name 'header' from the torrentview"""
+        self.save_state()
+        listview.ListView.remove_column(self, header)
+
     def set_filter(self, filter_dict):
         """
         Sets filters for the torrentview..