Update AdminLTE

- from 2.4.5 to 2.4.18 (cannot detect any issues)
- set default scancycle for Apple Devices to 1

front/lib/AdminLTE/build/less/core.less

@@ -70,11 +70,17 @@ body {
 }
 
 .content-wrapper  {
-  min-height: 100%;
+  min-height: ~"calc(100vh - 101px)";
   background-color: @content-bg;
   z-index: 800;
 }
 
+@media (max-width: @screen-header-collapse) {
+  .content-wrapper  {
+    min-height: ~"calc(100vh - 151px)";
+  }
+}
+
 .main-footer {
   background: #fff;
   padding: 15px;