Bug 12842: Add DDC classification numbers to MARC21 XSLT detail page

Patch will add DDC classifications, divided with | below the subjects
in the OPAC and staff detail pages.

To test:
- catalogue a record with one or mulitple 082$a subfields
- verify the classifications are displayed in OPAC and staff detail page
- Add following CSS to OpacUserCSS or IntranetUserCSS:

.results_summary.ddc {
  display:none;
}

- Verify the DDC classifications are now no longer displayed

Signed-off-by: Frederic Demians <f.demians@tamil.fr>

Test plan ok. Repetions of $a subfield are separated by a space, which seems
correct. I'm not sure whether other subfield than $a should be displayed on
intranet. Whatever, this could be added later.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>

koha-tmpl/intranet-tmpl/prog/en/xslt/MARC21slim2intranetDetail.xsl

@@ -565,6 +565,22 @@
             </span>
         </xsl:if>
 
+<!-- DDC classification -->
+    <xsl:if test="marc:datafield[@tag=082]">
+        <span class="results_summary ddc">
+            <span class="label">DDC classification: </span>
+            <xsl:for-each select="marc:datafield[@tag=082]">
+                <xsl:call-template name="subfieldSelect">
+                    <xsl:with-param name="codes">a</xsl:with-param>
+                </xsl:call-template>
+                <xsl:choose>
+                    <xsl:when test="position()=last()"><xsl:text>  </xsl:text></xsl:when>
+                    <xsl:otherwise> | </xsl:otherwise>
+                </xsl:choose>
+            </xsl:for-each>
+        </span>
+    </xsl:if>
+
         <xsl:if test="marc:datafield[@tag=856]">
         <span class="results_summary online_resources"><span class="label">Online resources: </span>
         <xsl:for-each select="marc:datafield[@tag=856]">

koha-tmpl/opac-tmpl/bootstrap/en/xslt/MARC21slim2OPACDetail.xsl

@@ -625,6 +625,23 @@
             </span>
         </xsl:if>
 
+<!-- DDC classification -->
+    <xsl:if test="marc:datafield[@tag=082]">
+        <span class="results_summary ddc">
+            <span class="label">DDC classification: </span>
+            <xsl:for-each select="marc:datafield[@tag=082]">
+                <xsl:call-template name="subfieldSelect">
+                    <xsl:with-param name="codes">a</xsl:with-param>
+                </xsl:call-template>
+                <xsl:choose>
+                    <xsl:when test="position()=last()"><xsl:text>  </xsl:text></xsl:when>
+                    <xsl:otherwise> | </xsl:otherwise>
+                </xsl:choose>
+            </xsl:for-each>
+        </span>
+    </xsl:if>
+
+
 <!-- Image processing code added here, takes precedence over text links including y3z text   -->
         <xsl:if test="marc:datafield[@tag=856]">
         <span class="results_summary online_resources"><span class="label">Online resources: </span>