Various Fixes - AtCore::closeConnection: no longer try to unload a plugin if one was not loaded. - AtCore Add missing space between functions - AtCore::loadFirmwarePlugin: remove redundant if block - AtCore::setSerialTimerInterval: don't destroy timer if set to 0 - mainpage.md fix for lays kde mail Signed-off-by: Chris Rizzitello <rizzitello@kde.org>