import-log: add parcelable prototype
import-log: improve operationresultparcel, add indentation
import-log: add log statements in import routine
import-log: add import log string resources
import-log: add output to logcat (for debugging)
import-log: better stripped key logging
Merge pull request #650 from open-keychain/v/import-log

Parcelable operation result with logging capabilities + import logging