Alpha 15 develop-2867

Lots more fixes as we move Alpha 15 along! Here’s what you’ll find in this release:
 * People no longer get stuck while running across modified terrain
 * Tweaks to crafter workshop UI
 * Fix for herbalist getting stuck in a bad state on load
 * Prevent town alert mode from getting stuck when the button is pressed repeatedly
 * Display folder name in save view as a tooltip. Helps users find the right save
 * Make sure beds and chairs are available to others when they are no longer in use
 * When AI gets stuck on a certain action, add logging to help diagnose problem
 * Make sure recovering and sleeping buff are no longer persisted past time
 * When you load a game from an existing game, the time controls now work properly
 * You can now start/stop AI logging using the entity inspector in debugtools
 * Clicking on town button repeatedly no longer throws a set on destroy error
 * Footmen now drop carrying when starting a patrol action, so their backpacks will not be full of stuff nobody else can get to
 * Various fixes for building dependency calculations
 * You can now build columns close to other columns and slabs
 * Performance improvements to “grow walls” code
 * Tweak inventory of Iskender Traders
 * Better update mechanism for encounters
 * Add two new music tracks to the game
 * Farmers now find new farming-related tasks in a more sane fashion
 * Goblin raiders now go away after 2 in game days, so they don’t sit around forever if they can’t find a path to your town
 * Shepherded animals are less likely to wander outside pastures
 * Monsters that should be leashed to an area are now more likely to stay in that area
 * Collection quest now works properly on save/load
 * Camera now has full overhead view
 * Growing walls around holes in the floor no longer results in extra walls
 * Crafter signs are now made by their respective crafters, using a plain wooden sign from the carpenter