Replace Ace code editor with Summernote RTF editor #180
Description
As requested by @st3wart, the RTF toolbar such as bold, italic, etc should be there.
Make sure Summernote can edit full HTML, starting from <html> to the ending </html> without ignoring <head> portion.
Also, find a way to overcome this bug summernote/summernote#274 in Summernote in which it replaces tag such as <meta>.. </meta> with only <meta>. Thymeleaf requires a valid XHTML in which all opening tag should have a closing tag.