Cleaned up Colton Hall jail

Removed the unnecessary Colton Hall Interior bits from the Colton Hall
Jail scene
Cleaned up Colton Hall lower floor

Removed unneeded jail assets from ColtonHallInterior scene
Fixed interior doors

Colton Hall jail and interior doors now work. Also fixed general door
code so that the player's POV is properly set after the level
transition.
Made gunpowder barrels interactive

Talking with Jane now starts the timer again; the gunpowder barrels can
now be interacted with (defused), and doing so will stop the timer once
again. ("Burning" particles and sound effects stop when the player
interacts with the barrel.)
Fixed solution file from last commit

Didn't close Visual Studio before making the commit. Should be fine now.
Merge branch 'master' of https://github.com/Shockz0rz/HOME-Unity