OGM-292 Simplifying options package in core and aligning with naming used in datastore modules
OGM-292 Aligning package structure of "map" dialect
OGM-292 Moving StartStoppable to datastore.spi
OGM-292 Moving option and navigation types for document stores to ogm.datastore.document.options.*
OGM-292 Renaming "options.context" into "options.navigation"
OGM-292 Incorporating JavaDoc changes from Emmanuel, getting rid of GlobalOptions et al.
OGM-292 Renaming OptionConfigurer to OptionConfigurator

* Also removing unused log method and compacting newly introduced log ids