Removed unused variable
Merge pull request #1191 from hansjoachim/unusedvariable

Removed unused variable
GameStateLoad::loadPreview(): lower calls to find() for empty equip slot
Fix target not updating when holding down action button

Since we skip adding non-instant powers to the action queue if there is
already a non-instant power in there, we were skipping target
calculation.

This patch fixes it so that we update the target when trying to add
a power that is already in the action queue.
Merge pull request #1193 from dorkster/fixes

GameStateLoad::loadPreview(): lower calls to find() for empty equip slot
Fix segfault in WidgetListBox

Fixes #1195
Merge pull request #1196 from dorkster/fixes

Fix segfault in WidgetListBox
Merge pull request #1194 from dorkster/action_target

Fix target not updating when holding down action button
Allow quantites to be sepcified for requires_(equipped)_item in powers

Formatting looks like this:
```
requires_item=10,25

requires_equipped_item=112,1
```

- requires_item will consume 1 item by default
- requires_equipped_item won't consume any item by default, but will
consume a maximum of 1 item if specified

Items no longer need to be of the "consumable" type to trigger a power
that consumes them. This let's us have a power-tree power that can
consume gold.
Allow buff powers to drop loot

Syntax in power definitions is the same as events and enemy definitions.
Make it possible to spawn loot from hazards