Added a stub for migration tests.
Sketches in query set paging in Neatline_ImportItems.
Records change to item import job in change log.
Wording change in changelog.
Wording change in changelog.
cursor removed from form labels in form.styl
font-weight increased and font-style changed for legend items in editor form.styl
Added schema fixture scaffolding.
Renamed old tables.
Created new tables.
Added test fixtures from the Hotchkiss demo.
Spawn a background job to finish the migration.
Added a helper class for handling migrations.
Fixed fixture loading issues and added first test for migration.
Migrate exhibit fields and refactoring.
Data from exhibits and records are transfered.
Fixed tests so that coverage transfers are handled properly.

* Multiple coverages are packed into a GeometryCollection.
* geoPHP (6 June 2013 from https://github.com/phayes/geoPHP) is used to
  convert KML to WKT.
Refactor migrating data records into its own function.
Use set_current_record to set the item when pulling metadata.

This is messy because we have to defensively re-set the item, although
the language itself doesn't have much for restoring or releasing
resources.
Set up the script path for views when running migration tests.