Bump alia and thus the datastax driver.
Merge pull request #96 from MastodonC/feature/alia-update

Bump alia and thus the datastax driver.
Smaller page size for batches.

To avoid write timeouts we're experiencing.
Merge pull request #97 from MastodonC/feature/measurement-smaller-pages

Smaller page size for batches.
Add device / sensor validation to csv-upload.

prismatic schema validation for devices and sensors. data level authorization.
make page size for measurements 10.

see #97