server + browser: message warning level/sending refactoring: - widgets now manage themselves warning level - widgets now manage themselves text entered (if they are selectable, onTextEntered must be present) - Unibox now default to selected widget/status bar, except if a hook syntax is used (e.g. "@@: public microblog") - warning message is now GROUP (in blue with default theme) when sending a message to a MUC room (instead of green before) - "@.*: " syntaxes are now fully managed by browser, no more by server