Change; feature

* Add overloaded BCoreApplication installTranslator and removeTranslator methods
* Rename BCoreApplication::translator method into beqtTranslator
* Rename BCoreApplication::translators method into beqtTranslators
* Rename BCoreApplication::installTranslator method into installBeqtTranslator
* Rename BCoreApplication::removeTranslator method into removeBeqtTranslator
* Rename BTerminalIOHandler::terminalTitle into title
* Rename BTerminalIOHandler::terminalSize into size
* Rename BTerminalIOHandler::terminalColumnCount into columnCount
* Rename BTerminalIOHandler::terminalRowCount into rowCount