Add Tags icon in the post.

On branch master

	modified:   _layouts/post.html
	deleted:    assets/css/bootstrap.css
	deleted:    assets/images/glyphicons-halflings-white.png
	deleted:    assets/images/glyphicons-halflings.png
	deleted:    assets/js/bootstrap-affix.js
	deleted:    assets/js/bootstrap-alert.js
	deleted:    assets/js/bootstrap-button.js
	deleted:    assets/js/bootstrap-carousel.js
	deleted:    assets/js/bootstrap-collapse.js
	deleted:    assets/js/bootstrap-dropdown.js
	deleted:    assets/js/bootstrap-modal.js
	deleted:    assets/js/bootstrap-popover.js
	deleted:    assets/js/bootstrap-scrollspy.js
	deleted:    assets/js/bootstrap-tab.js
	deleted:    assets/js/bootstrap-tooltip.js
	deleted:    assets/js/bootstrap-transition.js
	deleted:    assets/js/bootstrap-typeahead.js
	deleted:    assets/js/bootstrap.js
	deleted:    assets/js/bootstrap.min.js