Adding additional relations as has been done for DailyAirtempdatavalue; using new concern for derived value models
Add hourly models.
Rename.
Adding hourly ; duplicating daily coding.
Adding derived values controller

Includes hourly and daily; eventually will deprecate hourly and daily
controllers.
Adding a _DAILY to FIELD_MODELS.
Remove hourly_dischargedatavalue table references.

There is no hourly discharge data value table.
Add indexing for hourly values.
Adding indices to the hourly tables.
Merge branch 'master' into add-new-derived-controller
Checking for presence of index; add index if not detected.
adding support for z and caching envelopes
Merge branch 'add-new-derived-controller' of https://github.com/gina-alaska/imiq-api into add-new-derived-controller
adding search for new derived and time step fields
fixing up searches for time steps and derived vars
Updating schema to reflect changes to iarcod and indexing.
Adding network model.

Keeping consistent with organization table since they have similar
content.
removing the full variables list
fixed issue with time step for searches
don't need derived to be a verbose option