Fixes #76 exception when context menu in members date columns

src/cutecoin/gui/community_tab.py

@@ -55,7 +55,7 @@ class CommunityTabWidget(QWidget, Ui_CommunityTabWidget):
     def member_context_menu(self, point):
         index = self.table_community_members.indexAt(point)
         model = self.table_community_members.model()
-        if index.row() < model.rowCount():
+        if index.row() < model.rowCount() and index.column() < model.columnCount() - 2:
             source_index = model.mapToSource(index)
             pubkey_col = model.sourceModel().columns.index('Pubkey')
             pubkey_index = model.sourceModel().index(source_index.row(),