Position non-sticky footer at bottom of viewport

-Fix footer height and position after datatables are populated/drawn
-Remove footer-padding css rule
-Remove unnecessary spacing on all applicable pages

views/includes/address_history.pug

@@ -75,6 +75,9 @@ script.
         var amountParts = amount.split('.');
         $("td:eq(2)", row).html(updown + amountParts[0] + '.<span class="decimal">' + amountParts[1] + '</span>').addClass(rowclass);
         $("td:eq(3)", row).html(balanceParts[0] + '.<span class="decimal">' + balanceParts[1] + '</span>');
+      },
+      fnDrawCallback: function(settings) {
+        fixFooterHeightAndPosition();
       }
     });
   });

views/includes/net_addnodes.pug

@@ -23,6 +23,9 @@ script.
           return rows;
         }
       },
+      fnDrawCallback: function(settings) {
+        fixFooterHeightAndPosition();
+      },
       columns: [
         {data: 'nodes', width: '100%'}
       ],
@@ -53,6 +56,9 @@ script.
           return rows;
         }
       },
+      fnDrawCallback: function(settings) {
+        fixFooterHeightAndPosition();
+      },
       columns: [
         {data: 'nodes', width: '100%'}
       ],

views/includes/net_list.pug

@@ -29,6 +29,9 @@ script.
         $("td:eq(2)", row).html(data['version']);
         $("td:eq(3)", row).html(data['country']+flagBlock);
       },
+      fnDrawCallback: function(settings) {
+        fixFooterHeightAndPosition();
+      },
       columns: [
         { data: 'address', width: '25%' },
         { data: 'protocol', width: '25%' },
@@ -40,6 +43,7 @@ script.
       $($.fn.dataTable.tables(true)).DataTable().responsive.recalc();
       $($.fn.dataTable.tables(true)).css('width', '100%');
       $($.fn.dataTable.tables(true)).DataTable().columns.adjust().draw();
+      fixFooterHeightAndPosition();
     });
   });
 .card.card-default.border-0