refactor html statamic templates

 On branch master

	renamed:    website/_themes/pinfinity/templates/home.html -> website/_content/page.md
	new file:   website/_themes/pinfinity/partials/page-header.html
	new file:   website/_themes/pinfinity/partials/social-cta.html
	modified:   website/_themes/pinfinity/templates/blog_index.html
	modified:   website/_themes/pinfinity/templates/book.html
	modified:   website/_themes/pinfinity/templates/home.html
	modified:   website/_themes/pinfinity/templates/page.html