Move getRecentHistory into PlacesInterestsUtils.jsm
Use moz_interests_frecent_hosts instead of moz_hosts in Interests queries and tests.
Fix premature call to _refreshFrecentHosts which caused calling places before initialize
Refresh frecent hosts on "idle-daily" event
Moved refreshFrecentHosts to helper function _refreshFrecentHosts, as it is not a part of service interface
interests in its own component
transplant interests in its own component