[IMP] website: add openerp.define.js to load summernote with 'define'
[IMP] website: add summernote lib
[IMP] summernote: change lib for overwrite method
[FIX] tour.js to dispatch a real keyup event to simulate keypress with summernote lib
[REM] remove ckeditor
[IMP] website: use the new summernote editor
[IMP] summernote lib: check if a plugin add a method before the summernote methods because the plugins may be want to overwrite a default comportment. Key and click call plugins with more arguments (to allow the change and use of the lib) and the same arguments (some plugins can use button and key command for the same method)

https://github.com/summernote/summernote/pull/809
[IMP] summernote lib: extend createlink to allow to add a class on a link
[FIX] summernote lib: some browsers raise when select a range to target a node like an image or a br; createFromNode can't select a node withe more or less of one item. For eg: <div>text <span>one</span></div> the range selected is only 'text '

https://github.com/summernote/summernote/pull/799
[FIX] summernote lib: the prevent default for mousedown image to prevent ie and ff default 'features' must set the range because the cursor is used for edition.
Modify the code to use the dom range. Warning for picture because the browser can't target the image but the container.

https://github.com/summernote/summernote/pull/803
[IMP] summernote lib: set active/unactive buttons for image edition

https://github.com/summernote/summernote/pull/804
[IMP] summernote lib: save range each time the cuser mouseup or keyup in editable area and restore each time the user active an event.

In this case the user can click on an other page area and then click on the option without any error