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/bower_components/ion.rangeSlider/less/irs.less

@@ -0,0 +1,10 @@
+// Base styles
+@import "_base";
+
+// Skins styles
+@import "skins/flat";
+@import "skins/big";
+@import "skins/modern";
+@import "skins/sharp";
+@import "skins/round";
+@import "skins/square";