(FR #716) Prevent forced null search.

This is a workaround for a larger bug in Civi: search context is not
preserved during navigation.

See http://issues.civicrm.org/jira/browse/CRM-11566

Change-Id: I7557edee11b4912dccc87ce4259732ff968fcff0
Country lookup now accept full (english) name

Change-Id: I774c386a3e2e2f251e3f201144b3f42e9e51f589
zero-left-pad zipcode during import-checks

autodetect line endings

Change-Id: Ie22184a139eebb1bc6d3dc470330cd9c50faa793