Added index, completion and references for table names, column names …#351

VitaliyBoyko merged 6 commits intomagento:2.1.0-developmagento/magento2-phpstorm-plugin:2.1.0-developfrom

bohdan-harniuk:add-index-reference-and-comletion-to-db-schema-tables-and-columnsbohdan-harniuk/magento2-phpstorm-plugin:add-index-reference-and-comletion-to-db-schema-tables-and-columnsCopy head branch name to clipboard