Inputs are more modulable (they also have a common history and clipboard). Search is now fully functional, and some other stuff

fix some issues with recent-words completion, make the ConversationTabs closable with /unquery and ignore the keyboard shortcuts not handled.  fixed #1941

fix some little issues. Rename gui to core, use logging lib instead of the custom debug option. Add a -d option

use custom_port and custom_host if advanced configuration is needed. Else it will use SRV DNS resolution if dnspython is installed

Multi-resource. Handling <presence /> stanzas. But the normal conversation window is broken :^).  Fixed #1888

remove the warnings caused by the new version of sleekxmpp, and update the connection method (changed also in sleek)