Use float for setting skill use values. Should resolve bug #2183.

apps/opencs/model/world/columnimp.hpp

@@ -272,7 +272,7 @@ namespace CSMWorld
         {
             ESXRecordT record2 = record.get();
 
-            record2.mData.mUseValue[mIndex] = data.toInt();
+            record2.mData.mUseValue[mIndex] = data.toFloat();
 
             record.setModified (record2);
         }

apps/opencs/view/world/util.cpp

@@ -173,6 +173,8 @@ QWidget *CSVWorld::CommandDelegate::createEditor (QWidget *parent, const QStyleO
         {
             QDoubleSpinBox *dsb = new QDoubleSpinBox(parent);
             dsb->setRange(FLT_MIN, FLT_MAX);
+            dsb->setSingleStep(0.01f);
+            dsb->setDecimals(3);
             return dsb;
         }