add vertical-align back to where it's necessary since we reset from block to inline-block on several inputs

less/forms.less

@@ -303,6 +303,7 @@ input[type="checkbox"],
     // In navbar-form, allow folks to *not* use `.form-group`
     .form-control {
       display: inline-block;
+      vertical-align: middle;
     }
 
     // Override `width: 100%;` when not within a `.form-group`
@@ -319,6 +320,7 @@ input[type="checkbox"],
       margin-top: 0;
       margin-bottom: 0;
       padding-left: 0;
+      vertical-align: middle;
     }
     .radio input[type="radio"],
     .checkbox input[type="checkbox"] {