Merge pull request #113 from oakoval/live

Fixed url input problem
Allows search by category in /adim/pin/
Fix an error when pin does not exist.

There was an error on http://mypinnings.com/admin/pin/4040 because that pin was deleted. This was fixed to simply show pin does not exists.
Disable button in /admin/input/ to prevent duplicates

The Upload button is disabled on click to prevent the page to submit duplicates.
Randomly suffle the results of category listings

When viewing a category, randomly shuffle the results in order to not show always the exact same items in the exact same order in each view of the same category.
Removes duplicates from the category listing.

Detects if the same item is shown in the category listing twice and does not shows again.
Merge pull request #115 from camilotorresf/fixes

Fixes
In database, add the date and time when the user first registered
Remove duplicate tags in category listing
Loading image in category listing

Have a loading screen while the category is loading so it's not a blank space.
Load 30 items at a time in category listing

And fix automatic loading of images on scroll to bottom
Show the items in each column more balanced

Show the items more well distributed along the columns
Fix admin pin edit for pins without price
Show a loading at the bottom of the category listing

This is an image to show when loading more items.
Merge pull request #116 from camilotorresf/fixes

Fixes for category listing
Websearch by hashtag