removed mozilla dotted border from focus links

build/scss/_miscellaneous.scss

@@ -2,6 +2,10 @@
 // Misc: Miscellaneous
 //
 
+a::-moz-focus-inner {
+  border: 0;
+}
+
 .border-transparent {
   border-color: transparent !important;
 }

dist/css/adminlte.css

@@ -25701,6 +25701,10 @@ html.maximized-card {
   position: relative;
 }
 
+a::-moz-focus-inner {
+  border: 0;
+}
+
 .border-transparent {
   border-color: transparent !important;
 }