Reduce dependency on core styles

Follow up to Ibf837775d972deb29e9619cc6c12c919aae5155a

Depends-On: Ib5ae640bb260cee46e654228b785c776722c7003
Bug: T316027
Change-Id: I8ab2a554f753348ea2fb0fd4d28053ea17fbe83e

resources/common/components/Indicators.less

@@ -4,6 +4,7 @@
 	font-size: @font-size-base;
 	line-height: @line-height-base;
 	position: relative;
+	float: right;
 }
 
 .mw-indicator {

resources/common/components/SiteNotice.less

@@ -1,6 +1,14 @@
 @import '../variables.less';
 
+/** element that wraps a notice that comes from wiki page */
+#localNotice {
+	margin-bottom: 0.9em;
+}
+
 /* Site Notice (includes notices from CentralNotice extension) */
 #siteNotice {
 	font-size: @font-size-site-notice;
+	margin: @grid-row-gap 0;
+	position: relative;
+	text-align: center;
 }

resources/skins.vector.styles/layouts/screen.less

@@ -80,26 +80,24 @@ body {
 	float: right;
 }
 
-#siteNotice {
-	// Override core styles to ensure sufficient spacing between page content and main menu
-	margin: @grid-row-gap 0 !important; /* stylelint-disable-line declaration-no-important */
-}
-
 .vector-body {
 	position: relative;
 	z-index: @z-index-base;
 
 	#siteSub {
+		// By default its hidden as it was hidden in Vector legacy but site styles can reveal.
+		display: none;
 		margin-top: 8px; // T311564
 	}
 
 	#contentSub,
 	#contentSub2 {
-		// T311564: Override core styles to apply margin-top rather than margin-bottom
-		margin-top: 8px;
-		margin-bottom: 0;
-		// T307715: Override core styles to align with page title and #siteSub
-		margin-left: 0;
+		font-size: 84%;
+		line-height: 1.2em;
+		// T311564
+		margin: 8px 0 0;
+		color: #54595d;
+		width: auto;
 	}
 }
 

skin.json

@@ -235,9 +235,14 @@
 				"content-links-external": false,
 				"content-media": true,
 				"content-tables": true,
-				"interface": true,
-				"interface-message-box": true,
+				"interface": false,
 				"interface-category": true,
+				"interface-edit-section-links": true,
+				"interface-indicators": false,
+				"interface-message-box": true,
+				"interface-site-notice": false,
+				"interface-subtitle": false,
+				"interface-user-message": true,
 				"i18n-ordered-lists": true,
 				"i18n-all-lists-margins": true,
 				"i18n-headings": true,