DC: rename boot up table, rename database file, create tasker table

Change-Id: I77ec9694415140975c6f1f2102302aa110ed8284
DC: fix NPE for devices with knock on

Change-Id: Ifc05da82bbec1b1f081ba2584c35569336e8071c
DC: remove some potential NPE's

Change-Id: Ia50820590829ac77b08e750df68c7b7ac66e84ee