Merge pull request #2337 from NileemaJadhav/HR-235

CRM/Core/BAO/CustomGroup.php

CRM/Core/xml/Menu/Import.xml

CRM/Custom/Import/Controller.php

CRM/Custom/Import/Field.php

CRM/Custom/Import/Form/DataSource.php

CRM/Custom/Import/Form/MapField.php

CRM/Custom/Import/Form/Preview.php

CRM/Custom/Import/Form/Summary.php

CRM/Custom/Import/Parser.php

CRM/Custom/Import/Parser/Api.php

CRM/Utils/Type.php

templates/CRM/Custom/Import/Form/DataSource.hlp

templates/CRM/Custom/Import/Form/DataSource.tpl

templates/CRM/Custom/Import/Form/MapField.tpl

templates/CRM/Custom/Import/Form/Preview.tpl

templates/CRM/Custom/Import/Form/Summary.tpl