Add search form to application layout
Create search method in posts model
Implement search throughout all posts
Add post boxes on index and location index

Quick path for users to create a new ad, no matter where they enter the
site.

Add css for post photos

Add js for passing user from location selector to the location page, for
access to the new ad form.

Add css for admin sections of location and posts pages.
Fix jquery won't run unless you refresh page

Turblinks, which drastically improves performance when using jquery, has
a couple of issues with document loading and can break functions that
rely on page loading. The jquery-turbolinks gen fixes this.

1- Install jquery-turbolinks gem:
gem jquery-turbolinks

2 - In application.js, require it immediately after requiring jquery:

//= require jquery
//= require jquery.turbolinks

3 - Restart server