Better method for computing new vertices when adding faces.
Copy brush geometry when duplicating brushes.
Use QBSP's code for computing new vertices in brush geometry.
Sort faces by the weight of their boundary normal after loading
them from the map file.
Merge branch 'Release_1.0.0'

Signed-off-by: Kristian Duske <kristian.duske@gmail.com>

Conflicts:
	Mac/TrenchBroom/TrenchBroom-Info.plist
	Source/IO/MapParser.cpp
	Source/View/EditorView.cpp
Minor changes.

Signed-off-by: Kristian Duske <kristian.duske@gmail.com>