Fixes erroneous linefeed handle in OpenPGP.js write_signed_message()

Partially fixes #89, courtsey of encomiast
Removes pointless rstrip arg from pygpghttpd
attach public key when signing

attach the sender's public key as signature.asc when sending a signed
and/or encrypted email
Renames signature.asc to pubkey.asc

Removes pubkey attachment debug declaration

Fixes #39 along with e272d38521af6b30a6d004369d277a92b7b9a9fc
Adds VERSTR declaration

VERSTR will be used for detecting if the plugin is up to date.
Adds plugin version detection

Fixes #107
Bumps VERSTR
Fixes bug which would say the manager is missing keys when search fails
updating openpgp.min.js, version check, bug fixes

sync with upstream