Fix client allocations table heading order

This closes #8408. Thanks to @gmichalec-pandora for letting us
know about this.

ui/app/templates/clients/client/index.hbs

@@ -301,8 +301,8 @@
           <t.head>
             <th class="is-narrow"></th>
             <t.sort-by @prop="shortId">ID</t.sort-by>
-            <t.sort-by @prop="modifyIndex" @title="Modify Index">Modified</t.sort-by>
             <t.sort-by @prop="createIndex" @title="Create Index">Created</t.sort-by>
+            <t.sort-by @prop="modifyIndex" @title="Modify Index">Modified</t.sort-by>
             <t.sort-by @prop="statusIndex">Status</t.sort-by>
             <t.sort-by @prop="job.name">Job</t.sort-by>
             <t.sort-by @prop="jobVersion">Version</t.sort-by>