Simplify column translations

(cherry picked from commit 551ea18caf50353c4c8dbeba5e42d266dbbfb54d)

Closes #2759

frontend/src/System/Tasks/Queued/QueuedTasks.js

@@ -15,27 +15,27 @@ const columns = [
   },
   {
     name: 'commandName',
-    label: translate('Name'),
+    label: () => translate('Name'),
     isVisible: true
   },
   {
     name: 'queued',
-    label: translate('Queued'),
+    label: () => translate('Queued'),
     isVisible: true
   },
   {
     name: 'started',
-    label: translate('Started'),
+    label: () => translate('Started'),
     isVisible: true
   },
   {
     name: 'ended',
-    label: translate('Ended'),
+    label: () => translate('Ended'),
     isVisible: true
   },
   {
     name: 'duration',
-    label: translate('Duration'),
+    label: () => translate('Duration'),
     isVisible: true
   },
   {

frontend/src/System/Tasks/Scheduled/ScheduledTasks.js

@@ -10,27 +10,27 @@ import ScheduledTaskRowConnector from './ScheduledTaskRowConnector';
 const columns = [
   {
     name: 'name',
-    label: 'Name',
+    label: () => translate('Name'),
     isVisible: true
   },
   {
     name: 'interval',
-    label: 'Interval',
+    label: () => translate('Interval'),
     isVisible: true
   },
   {
     name: 'lastExecution',
-    label: 'Last Execution',
+    label: () => translate('LastExecution'),
     isVisible: true
   },
   {
     name: 'lastDuration',
-    label: 'Last Duration',
+    label: () => translate('LastDuration'),
     isVisible: true
   },
   {
     name: 'nextExecution',
-    label: 'Next Execution',
+    label: () => translate('NextExecution'),
     isVisible: true
   },
   {