Added helper to serve gridfs content via sendfile
Updated toolkit for gridfs usage
Purged exceeded nesting
Added customer id value to the session
Renamed image model
Added helper method for querying gridfs model
Merge branch 'fevent_dev' into gridfs_workaround
Added unique constraint on file name
Added unicode method for fancier debug output
Updated send message utility to use gridfs storage for attachments
Fixed imports paths. Fixed model naming
Fixed FileModel import path
Extracted test runner from the core commands
Updated session interface with lates library methods changes
Dropped unique index on file name
Updated price_options storage kind
Added price_options migration command
Added server time to the meta-response
Fixed default page size value passing
Added docstrings a bit