Added a few sqlite commands and a table to help support prohibit
deactivation.
prohibits will be "deactivated" when referenced in smem_lti_activate (if
not already prohibited)
Initialing an lti's entry in the prohibit table when activation history
would be created for a new chunk. They should be referenced in similar
timings and order, so mirroring initialization and modification for
activation "should" prevent weird edge cases as those have already been
thought of, hopefully.