hide arrows on snippetbar triggers, improve spacing

to decrease the width used for the snippet bar triggers, removed the down arrows (for the top level triggers only).  And, reduced the padding on the icons in the snippetbar while retaining it inside the menus.

The icons still align between the menu list and the menu trigger, but the text labels do not.

client/homebrew/editor/snippetbar/snippetbar.less

@@ -145,6 +145,11 @@
 
 	
 	.menu-wrapper {
+		.menu-item:first-child {
+			.caret {
+				display: none;
+			}
+		}
 		.menu-list {
 			padding          : 0px;
 			background-color : #DDDDDD;
@@ -162,6 +167,9 @@
 		cursor      : pointer;
 		width: 100%;
 		.animate(background-color);
+		&:is(.menu-list .menu-item) [class*="name"] {
+			padding-inline: 8px;
+		}
 		.menu-name {
 			flex: 1;
 			text-align: left;
@@ -172,7 +180,6 @@
 			height       : .85rem;
 			font-size    : 1.2em;
 			text-align   : center;
-			&:first-child { margin-right: 5px }
 			&.caret {
 				margin-right: 0;
 			}