add first functional DS web service with user, experiment and auth controllers that allow retrieving user and experiment information from the db, start/stop experiment, and principal authorization; added corresponding API and CLI classes; added storage manager skeleton

add first functional daq web service with experiment controller, functionality to observe file system and invoke file transfers; add initial API and CLI classes for start/stop daq, upload data;

moved common authorization/authentication classes into their own module to better reflect their functionality; added checks for admin role name into principal retrievers

added java utility to verify crypted passwords from the local db; modified login controller to use it

got db manager, basic db entities, handlers and apis working for user info, experiment/experiment type tables

refactored some of the cdb python classes (utility, base api and cli classes, exceptions, constants)

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