Some cleanup.

Setting vars to nil isn't needed in dealloc.
pinentryDescription added.
environ isn't available in Frameworks.
[FIX] Return the actual error code if there's a problem with gpg-agent or pinentry if GPGErrorCancelled is detected. [#54 state:fixed]
GPGKeyserver copy finishedHandler.
keyserverURLWithQuery error parameter added.
Use english localization instead of source string.
NSImage compile bug
Better exception handling in GPGKeyManager.
pinentryInfo added.
Use gpgs own keyserver implementation.
GKA Bug #187 fixed.

fingerprint in key inspector sticks despite displaying different key.
Force gpg to use UTF8.

GKA Ticket #188.
Pass sign as key usage for primary key and encrypt as key usage for the subkey if RSA/RSA is selected. [#56 state:started]
By default, key usages are set as defined by the gnupg command line. [#56 state:fixed]
Perform key reloads triggered by key change notifications in the background. [#57 state:fixed]
Correctly parse UserIDs without a name.
[FIX] Remove spaces at the end of the last line. [#58 state:fixed responsible:mento]
GPGSIgnature: Find correct key in case of only the KeyID is issued.
[FIX] Key generation bug fixed.