core (client): added feedback and sendMessage methods: - feedback method is a helper method to quickly display an info message to user - sendMessage is the method used to send a message in the stream, using message data dictionary. It inclure a trigger point which can't be cancelled, it is intended for e2e encryption method which don't do full stanza encryption. - "send" trigger point is disabled as it is not used at the moment

include MANIFEST.in ez_setup.py
global-include *.py
global-include *.ini
global-include *.po *.mo
global-include CHANGELOG COPYING* INSTALL README*
global-include *.sh
include src/sat.*
include misc
include frontends/src/jp/jp frontends/src/primitivus/primitivus
include src/bridge/bridge_constructor/mediawiki_template.tpl
global-exclude *.un~
prune src/bridge/bridge_constructor/generated