Ettore misc fix

Various fixes:

• move writers to lib-host. Closes #43 (closed)
• add ttc ready and qpll lock latched. Closes #34 (closed)
• fix server crash when unknown board connects. Closes #33 (closed)
• drop old logger. Closes #46 (closed)
• drop old triggerless event writer
• remove workaround for board in US/DS
• logger level info default
• fix FW date