detail pages for customers and projects (#1371)

translations/messages.en.xlf

@@ -64,6 +64,10 @@
                 <source>update_multiple</source>
                 <target>%action% %count% entries?</target>
             </trans-unit>
+            <trans-unit id="attachments">
+                <source>attachments</source>
+                <target>Dateien</target>
+            </trans-unit>
 
             <!--
               Login / Security
@@ -176,6 +180,10 @@
                 <source>error.no_entries_found</source>
                 <target>No entries were found based on your selected filters.</target>
             </trans-unit>
+            <trans-unit id="error.no_comments_found">
+                <source>error.no_comments_found</source>
+                <target>There were no comments posted yet.</target>
+            </trans-unit>
 
             <!--
               General labels