Fixed Double Instantiation

When a modal was closed and the data was loaded again it tried to
instantiate the table again, so always destroy the table on load.

static/js/app/landing_pages.js

@@ -93,6 +93,7 @@ function load(){
         if (pages.length > 0){
             $("#pagesTable").show()
             pagesTable = $("#pagesTable").DataTable({
+                destroy: true,
                 columnDefs: [
                     { orderable: false, targets: "no-sort" }
                 ]

static/js/app/templates.js

@@ -182,6 +182,7 @@ function load(){
         if (templates.length > 0){
             $("#templateTable").show()
             templateTable = $("#templateTable").DataTable({
+                destroy: true,
                 columnDefs: [
                     { orderable: false, targets: "no-sort" }
                 ]

static/js/app/users.js

@@ -125,6 +125,7 @@ function load(){
             $("#emptyMessage").hide()
             $("#groupTable").show()
             groupTable = $("#groupTable").DataTable({
+                destroy: true,
                 columnDefs: [
                     { orderable: false, targets: "no-sort" }
                 ]