8th - Restructured _includes

Gruntfile.js - Updated SFTP Deploy task.
footer.html / header.html - Renamed to foot.html and head.html and
created new footer.html / header.html includes for page header / footer
sections.
default.html - Updated includes to call header.html / head.html /
footer.html / foot.html.
.ftppass - Deleted. Can be created when needed in the future.