Fixing issues with spaces in Storage URLs

removed spaces replaced by +

added spaces to valid url validation

Incremented app engine version

Fixed issue with spaces in the URL
Merge pull request #8 from Rise-Vision/bug/file-url-spaces

Fixing issues with spaces in Storage URLs
Setting a margin and padding of 0 for preview

Incrementing app engine version
Merge pull request #7 from Rise-Vision/bug/remove-margins

Remove margins and padding from placeholder preview
Adding Billing Administrator and Purchaser roles

These roles are required for the Store release