Improved display of spaces in MARC staff view.

- Previously, spaces were collapsed in the HTML rendering of the MARC record, which could obscure the meaning of fixed-position fields like the LEADER, 006, 007 and 008.
- This commit adds new CSS rules and classes to allow greater control over display of MARC fields.
- Resolves VUFIND-1170.

module/VuFind/xsl/record-marc.xsl

@@ -16,7 +16,7 @@
           <td width="5%"/>
           <td width="*"/>
         </tr>
-        <tr>
+        <tr class="marc-row-LEADER">
           <th>LEADER</th>
           <td colspan="3"><xsl:value-of select="//marc:leader"/></td>
         </tr>
@@ -25,7 +25,7 @@
   </xsl:template>
 
   <xsl:template match="//marc:controlfield">
-      <tr>
+      <tr class="marc-row-{@tag}">
         <th>
           <xsl:value-of select="@tag"/>
         </th>
@@ -34,7 +34,7 @@
   </xsl:template>
 
   <xsl:template match="//marc:datafield">
-      <tr>
+      <tr class="marc-row-{@tag}">
         <th>
           <xsl:value-of select="@tag"/>
         </th>

themes/bootstrap3/less/components/record.less

@@ -37,3 +37,10 @@
   color: #999;
   text-decoration: none;
 }
+
+.marc-row-LEADER,
+.marc-row-006,
+.marc-row-007,
+.marc-row-008 {
+  white-space: pre-wrap;
+}

themes/jquerymobile/css/styles.css

@@ -303,4 +303,11 @@ span[class^="services-"], span[class*=" services-"] span:first-of-type::before {
 }
 span[class^="services-"], span[class*=" services-"] span::before {
     content: ", ";
-}
\ No newline at end of file
+}
+
+.marc-row-LEADER,
+.marc-row-006,
+.marc-row-007,
+.marc-row-008 {
+  white-space: pre-wrap;
+}