update summernote library up to revision: https://github.com/summernote/summernote/commit/a0f26e300 see https://github.com/summernote/summernote/ for history closes #8704
update summernote library up to revision: https://github.com/summernote/summernote/commit/a0f26e300 see https://github.com/summernote/summernote/ for history closes #8704