New features and bug fixes

• custom field's names for ElasticSearch objects.
• minimal date for data export

Optimization and bug fixes

2.1-beta

Deleted unnesessary parse function. Minor bug fixes

Export to ElasticSearch

• added export to ElasticSearch (tested with ES 5.1.1)
• configs are stored as JSON file
• progress for each infobase stored as JSON file as well (instead of row in Params table).

1.0.0.2

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