vCardTemp API for #252
xmppStreamDidChangeMyJID: API
XMPPCapabilities myCapabilitiesNode API

Fixes #262
Fix Assert Wording
Remove code.google.com references
XEP-0092: Software Version
Bug Fixes for XEP-0092
XEP-0335: JSON Containers
Fixes 64 bit warning
Fixes Empty Capabilities Bug
goOnline methods now set Presence Priority to 24 for Google Talk
Update Project Settings
Moved subject accessors to Core/XMPPMessage because they are not group chat speciffic
Added accessors for body language (xml:lang, not the American chicks stuff)
Removed compilation warning
Formatting
XMPP bodyForLanguage returns nil if body not found

Closes #271
Merge remote-tracking branch 'upstream/master'