Added dummy CardEditor, implemented Stylesheet loading

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@50 0fc631ac-6414-0410-93d0-97cfa31319b6

src/render/value/viewer.cpp

@@ -10,6 +10,11 @@
 
 // ----------------------------------------------------------------------------- : ValueViewer
 
+void ValueViewer::setValue(const ValueP& value) {
+	assert(value->fieldP == styleP->fieldP); // matching field
+	valueP = value;
+	onValueChange();
+}
 
 // ----------------------------------------------------------------------------- : Development/debug