Map objects.pick() and omit() to lodash implementations
Introduce objects.wrap() to namespace object content
Stub exportAll() and importAll() on storeDouble
Introduce Store#importAll() and exportAll() to import/export all store content
Use Store#importAll() and exportAll() to implement app JSON import/export
Test moka/core/utils/functions.apply()
Test moka/core/utils/objects.wrap()
Fix timezone issue in tests