Updated listings resource from singular 'listing' to 'listings' as per rails conventions.
Added edit and new pages to update/create listings
Changed line to fix HashWithIndifferentAccess error.
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Added a set of all listings to the admin page, with edit/delete/view buttons. Updated Create New Listing button on admin page.
Updated listing deletion to render admin page instead of static listings page. Fixed edit and new page to allow decimal instead of integer bathrooms (such as 2.5).
Added validations (listing should not have empty entries); added listing error messages; added test testing the listing creation and update forms.
Removed old, unnecessary cold, updated listing controller test and listing controller. Redirect to admin show action instead of :back after deleting a listing.
Updated listing control panel from a table to bootstrap div elements and buttons
Generalised _error_messages.html.erb to apply to object; now whatever object we're rendering the error messages for can be passed in when rendering the error message partial. Updated all references to layouts/listings_errors to layouts/error_messages; removed listings_errors; updated all usages of error_messages to pass the correct object.
Moved validation of numeric values in listings to model rather than in the form; added tests verifying these validations; changed forms to text fields. Redirect to admin/show after editting or creating a listing, rather than viewing the listing.
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Merge pull request #32 from sourlows/dlc_17

Dlc 17 - Listings UI [IN-PROGRESS]