resize the middle column so that all columns fit into the client area

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk@25852 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac
Don't fill the property edit dialog with values from inherited properties to avoid setting them accidentally.
(Fixes issue #665) : inherited properties give unexpected results


git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk@25853 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac