[minor] add btree index on commands.actionid and commands.agentid
[minor] split up module interfaces into separate file
[minor] use typed command results upon insertion into the database
[doc] add example of complex target query
[medium/bug] fix premature exit of heartbeat goroutine in sheduler
[doc] fix investigators.id type to numeric in db creation scripts
Merge branch 'master' of github.com:mozilla/mig