[nojira] Fixing asset serving for production environments.
* Allow static assets to be served by the app server if Apache is not present.
(It still requires manual configuration of the  ../config/.env_conf.yml file.)
CYB-114 Final portion -- the asset data is not stored in Activity anymore, but in an Attachment table.
This commit provides the data previously processed into the Attachment table to the front end UI.
Merge pull request #63 from coyote/bootstrap_prod_fix

[nojira] Fix bootstrap controller for production environment.
Merge pull request #66 from coyote/attachment_model_use_in_gallery

CYB-114 -- Attachment model data use by the front-end.