[python][jupyter] Customization

• Add Table of Contents to your Jupyter Notebook 
• http://www.statsblogs.com/2016/08/10/add-table-of-contents-to-your-jupyter-notebook/
• http://www.sas-programming.com/2016/08/add-table-of-contents-to-your-jupyter.html

• Add Sublimetext keymap

``` require(["codemirror/keymap/sublime", "notebook/js/cell"], function(sublime_keymap, cell) { cell.Cell.options_default.cm_config.keyMap = 'sublime'; }); ```

• Add customized hotkey

``` $([IPython.events]).on("app_initialized.NotebookApp", function() { IPython.keyboard_manager.command_shortcuts.add_shortcut('ctrl-k', function(event) { IPython.notebook.move_cell_up(); return false; }); }); ```