Add left-hand nav for User Account section. AJAX for 'Listings', will also need AJAX for 'Reviews', 'Requests', 'History'.
Merge branch 'development' of http://github.com/felguerez/gear2peer into account_profile

Conflicts:
	lib/air_cycle.rb
	web/app/assets/stylesheets/users/user_reviews.css.scss
Merge pull request #115 from felguerez/account_profile

Account profile