Fix overlapping sidebar

Author: ciar4n

administrator/templates/atum/css/template.css

@@ -8378,6 +8378,7 @@ small, .small {
 
 .container-main {
   position: relative;
+  min-height: 420px;
   padding-top: 15px;
   background: #fff; }
 

administrator/templates/atum/css/template.css.map

@@ -65,6 +65,7 @@ small, .small {
 
 .container-main {
   position: relative;
+  min-height: 420px;
   padding-top: 15px;
   background: $white;
 }