Changed posting with pins with images
S3 images names only lowercase and + numbers
Use a bit less numbers in S3 file name generation
Fix edit pin in profile
Fix displacement headers

When loading, for 1 sec the page shows all skewed and
bad formatted. Now shows normal
Fetch more items in listings
Put the more sensitivity to scroll control
Lazy load images in category listing
Lazy load images in lists
Fix image loading in lists
Merge pull request #76 from camilotorresf/fixes

Fixes in image uploading, profile, headers, formatting, etc.
Don't ask for category editing pin in profile
Remove category selection for user uploaded pins

Remove from upload from file and upload from url.
Fixed item page to show the item regardless having
a category.
Show items in list regardless having category
confirmuser method: SignUp APIs
Merge branch 'live' of github.com:mygetlist/pin into live
requrements.txt add module
Category selection for pins in admin
Select category: fix layout
Add widht and height for images to pins