Added utils functions that supports the series query handling and general regex helper.
Finished identifiers extraction for series.
Updated the identification process.
Added some more improvements to the identfiers module.
Added improvements to the OpenSubtitles part in the identifiers extraction.
Changed a liitle bit the design of the identifiers extractor.
Finished the module implementation except for the OpenSubtitles hash.
Finshed the identifiers extraction module implementation. closes #8