Multi-select: Further Spacing Adjustments

Retain more of the select2 spacing, and remove the input spacing.

Author: AlexGStapleton

css/admin.less

@@ -2538,8 +2538,12 @@
 			.select2-container {
 				width: 100% !important;
 
-				.select2-search--inline {
-					margin-bottom: 0;
+				.select2-selection--multiple {
+					padding: 0;
+				}
+
+				.select2-search__field {
+					margin-top: 0;
 				}
 
 				.select2-selection__choice__remove {