[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.
[IMP] summernote lib: set active/unactive buttons for image edition
[FIX] summernote lib: font size and font color is some time buggy. Create a new function applyFont to remove bugs and to have the same comportment for all browsers. Imp: can use class for color and background color
wip