[dev-2477] soundtrack that turn on when intruder come. and other bugs

1.it isn’t stop although the all goblins died.

develop-2477 (x64)
radiant/modules/entities.luac:75: bad argument #2 to ‘format’ (string expected, got nil)
stack traceback:
[C]: ?
[C]: in function 'format’
radiant/modules/entities.luac:75: in function 'get_player_id’
stonehearth/lib/player/relations.luac:28: in function ‘are_players_hostile’
…onehearth/services/server/player/player_service.luac:25: in function ‘are_players_hostile’
…h/services/server/population/population_faction.luac:73: in function ‘_get_threat_level’
…h/services/server/population/population_faction.luac:77: in function ‘_on_seen_by’
…h/services/server/population/population_faction.luac:70: in function <…h/services/server/population/population_faction.luac:70>
[C]: in function ‘push_object_state’
…h/services/server/population/population_faction.luac:70: in function ‘_monitor_citizen’
…h/services/server/population/population_faction.luac:10: in function 'self’
radiant/modules/events.luac:80: in function <radiant/modules/events.luac:78>
[C]: in function 'xpcall’
radiant/modules/events.luac:78: in function <radiant/modules/events.luac:70>

2. Workers sometimes are idle and they don’t mine

this problem I fixed it by join them to party (key G) and order them to go to near mine so it will mine it.
but now They didn’t obey me they went there but they are idle.

3. Sometime footman hold no thing

It’s occurred to Giant axes but fix by reload game. But in footman’s inventory they still hold it

4. Item such as Tools, deployable, weapon, armor and crate. When in the crate It’s can’t take off to use

Trapper’s pet can’t eat food in crate. It’s starved. poor raccon

5. Accidentally crash

For no reason but it’s mostly occurred after auto save

FYI. My rig : i7-4790k Ram 8 gb gtx 970 and sorry for my bad English ,i’m asian