Added deployment documentation
Enabled error logging to stdout by default
Fixed bug in EpochField

On MySQL, the type returned by the database for an EpochField is
`long`, not `int`.
Fixed wording in device delete template
Fixed "too many SQL variables" bug in SwidMeasurementView
Massive performance optimizations in inventory view
Migration scripts for TagStats model
Fixed 'too many SQL variables' in log view and added filter to log view
Fixed the 'initial measurement not shown in log view' problem
Added overflow-x: scroll to paged content
Improved CSS