forms.less: Apply fixed height to input elements

- file element has a button and requires more height
- radio and checkbox are decorated diffrently

Author: sukhwinder33445

public/css/icinga/forms.less

@@ -229,8 +229,7 @@ form.icinga-form {
 }
 
 form.icinga-form select:not([multiple]),
-form.icinga-form input[type="datetime-local"] {
-  // Compensate inconsistent select height calculations
+form.icinga-form input:not([type="checkbox"], [type="radio"], [type="file"]) {
   line-height: 1em;
   height: 2.25em;
 }