MySQL (or other intermediate) database should be removed

[uforia]

A new DB handler module for Uforia should be written that stores information directly into ElasticSearch instead of an intermediate DB (such as MySQL).

This also requires significant changes to the front-end:

• It would no longer need to import information into ElasticSearch; this implies that the initial processing already stores the information in the correct format.
• The front-end will no longer need to connect to MySQL (significant improvement)
• More things...