Merge pull request connectbot#441 from kruton/pubkeys-backup

Add preference for backing up pubkeys

Closes connectbot#351

Merge pull request connectbot#426 from kruton/lint-fixes

Lint fixes

Merge pull request connectbot#425 from kruton/translations-export

Export translations

Merge pull request connectbot#424 from kruton/open-doc-import

Use new Document intent to import Pubkeys

Merge pull request connectbot#423 from kruton/exp-ed25519-native

Add support for Ed25519 pubkeys

Merge pull request connectbot#422 from kruton/debug-icon-overlay

Add ribbon identifying debug version

Merge pull request connectbot#421 from kruton/update-translations

Update translations

Merge pull request connectbot#419 from kruton/more-tests

More test coverage

Merge pull request connectbot#418 from kruton/pubkey-final-init

Move final field initialization earlier

Merge pull request connectbot#417 from kruton/pubkey-list-test

Add idling resource for the key generation activity test