centering of num item values in char sheet

Changes:
- number values of items in the items overview of a char sheet
  are now horizontally centered
- description content is now vertically correctly aligned

src/scss/components/_items.scss

@@ -33,6 +33,10 @@
         text-align: right;
     }
 
+    .item-num-val {
+        text-align: center;
+    }
+
     .item-description {
         font-size: 75%;
         white-space: nowrap;
@@ -42,6 +46,11 @@
             text-overflow: ellipsis;
             overflow: hidden;
         }
+        p:first-child {
+            margin-top: 0px;
+            padding-top: 0px;
+        }
+
     }
 }