erp5_jexcel_editor: all formulas saved

erp5_jexcel_editor: code review correction

erp5_jexcel_editor: changed cursor for color table

erp5_jexcel_editor: reunited the two gadgets

erp5_jexcel_editor: compatibility with sheet names, domsugar for dom generation, change column types in undo/redo history, replace callback functions by jobs, drop setTimeout, changed context menu event

erp5_jexcel_editor: less config attributes in table, moved changing type to context menu

erp5_jexcel_editor: add/delete columns/rows in toolbar