Merge branch 'master' into javascript-binding

js: adding sign method

js: remove openpgp mode

js: transfer encoding changes

js: Testing lare messages

js: Tests and improvements for openpgp mode

js: remove non-browser tests

js: more testing of nativeMessaging connection

Merge branch 'master' into javascript-binding

js: more testing

js: fixing errors found by testing: encrypt/decrypt

js: fixing errors found by testing

js: Added browser testing for unit tests

js: changed Key class stub

js: more testing

js: fixed empty operation setter in Message

js: fixed wrong paths in DemoExtension

js: created TestExtension and smaller fixes

js: First testing and improvements

js: Configuration and Error handling

js: reactivate timeout on connection

js: change in Error behaviour

js: allow openpgp-like Message objects as Data

js: Key object adjustments after discussion

js: change in initialization ancd connection handling

js: don't allow message operation changes

js: Key handling stubs, Error handling, refactoring

Merge branch 'master' into javascript-binding

js: encrypt improvement and decrypt method