Minor changes (clarifications, very small optimizations, better indentation, etc)
Merge branch 'master' of https://github.com/lawrancej/logisim into minor-changes

Conflicts:
	src/main/java/com/cburch/draw/actions/ModelAction.java
	src/main/java/com/cburch/draw/actions/ModelChangeAttributeAction.java
	src/main/java/com/cburch/logisim/tools/PokeTool.java
	src/main/java/com/cburch/logisim/tools/WiringTool.java
	src/main/java/com/cburch/logisim/util/InputEventUtil.java
	src/main/java/com/cburch/logisim/util/LocaleManager.java
	src/main/java/com/cburch/logisim/util/LocaleString.java
Adding StringUtil.join