28 grid filter with dict list

* Redesign the class `Filter` to work with any king of layout.
* Add the form field `Table`
* Add the event `change` to the form field `Dict` and `List`
* Modify the configuration of the plugin `ace` by adding missing files for debug.
* Close #28

See merge request !29

8 extjs 6

* Migrate to Ext JS 6.0.1.250
* Close #8 

See merge request !26

For an unknown reason, the method getXtype return the wrong xtype
when running with the compile library (combo instead of combobox).