Style refactoring in top-level queryRecords method on NeatlineRecordTable.
Renames 'count' records API attribute to 'numFound', for consistency with Solr.
Renames 'offset' -> 'start', for consistency.
Standardizes item 'added' ordering in test fixtures.
Standardizes the explicit 'added' ordering on records in PHPUnit tests.
Set nModel and nFrozen directly on vector/WMS layers on initialization.
Instead of tacking nFrozen and nModel attributes directly onto layers, tuck them under a 'neatline' key.
Fixes vector/WMS layer z-index test insensitivity.
Gets rid of unnecessary defaultParameters static attribute on NeatlineRecordTable.
Refactors records API methods.