added storageLocation property to items

Additions:
- added storageLocation property to classes
- added storageLocation field to template
- added localization

Changes:
- changed default values for item string properties to "-"

Fixes:
- fixed CSS side-property flex properties
  such that new text field is properly shown
- fixed for="..." setting for item's data.price label

src/scss/components/_description.scss

@@ -1,5 +1,5 @@
 .side-properties {
-    flex: 0 0 150px;
+    flex: 0 0 50%;
     margin: 5px 5px 5px 0;
     padding-right: 5px;
     border-right: 2px groove $c-border-groove;
@@ -10,15 +10,15 @@
         flex-direction: row;
 
         label {
-            flex: 2;
+            flex: 1;
             line-height: 26px;
             font-weight: bold;
         }
 
         input,
         select {
-            text-align: right;
-            flex: 1;
+            text-align: left;
+            flex: 1.5 1.5 0px;
             width: calc(100% - 2px);
         }
     }