Added link to manage accession files

src/main/webapp/WEB-INF/jsp/accession/details.jsp

@@ -382,9 +382,21 @@
 		<!-- End: basic info section -->
 
 		<!-- Image gallery section -->
+    <security:authorize access="hasRole('ADMINISTRATOR') or hasPermission(#accession.institute, 'ADMINISTRATION')">
+      <div class="row">
+        <div class="col-lg-12 col-md-12 col-sm-12 col-xs-12 form-group">
+          <a href="<c:url value="/wiews/${accession.institute.code}/files/acn/${accession.accessionName}" />" class="btn btn-default">
+              <spring:message code="file.manage-files" />
+          </a>
+        </div>
+      </div>
+    </security:authorize>
+
 		<c:if test="${imageGallery ne null}">
 			<div class="collect-info gallery">
-			<h4 class="row section-heading"><spring:message code="accession.imageGallery" /></h4>
+  			<h4 class="row section-heading">
+          <spring:message code="accession.imageGallery" />
+        </h4>
 				<div class="section-inner-content clearfix">
 					<div class="row imagegallery thumbs" id="accession-images-thumbs">
 						<c:forEach items="${imageGallery.images}" var="image">