foundation upgraded to version 5

Conflicts:
	Gemfile
styling upgrades, foundation 5
styling reply form

Conflicts:
	app/assets/stylesheets/application.css
	app/views/replies/_form.html.erb
Remove search for now, first make Foundation 5 working.
Fix active tab bug.
Add labels
Rewrite to Foundation 5 classes.
Rewrite to Foundation 5 classes.