Remove unused css rules

* language-selector can only appear in secondary actions so only
load rule on Main page
* .no-js-only not used in MobileFrontend or Minerva
* Remove last-modified-bar rules from ui.less that are repeated
inside footer less file
* #mw-mf-last-modified id is no longer used post-footer rewrite
* CSS rules for .mw-mf-banner are defined in Zero extension
* mw-mf-image-replacement is no longer needed after we turned off
the option to disable images in the mobile site

Change-Id: I7abdbac4d2d16b931e2b110fcebf0dfc82146753

resources/skins.minerva.base.styles/common.less

@@ -33,15 +33,6 @@
 	.box-sizing( border-box );
 }
 
-.mw-mf-image-replacement {
-	font-style: italic;
-	color: @colorGray7;
-	text-decoration: underline;
-	border: dotted 1px @colorGray12;
-	padding: 10px;
-	display: inline-block;
-}
-
 textarea {
 	padding: 5px 0 5px 5px;
 	width: 100%;
@@ -57,7 +48,6 @@ textarea {
 .toc,
 // We also need a more specific rule for tablet non-JS users who will load skins.minerva.tablet.styles
 .client-nojs .toc-mobile,
-.client-js .no-js-only,
 .client-js .mw-redirectedfrom,
 // FIXME: Use generic rule for print stylesheets
 .printfooter,
@@ -67,7 +57,6 @@ textarea {
 
 /* TODO: Fix specificity */
 /* stylelint-disable no-descending-specificity */
-.no-js-only,
 .client-js .jsonly {
 	display: inherit;
 }

resources/skins.minerva.base.styles/ui.less

@@ -41,11 +41,6 @@ body {
 }
 
 .last-modified-bar {
-	background-color: transparent;
-	display: block;
-	color: @colorGray5;
-	transition: background-color 0.2s ease, color 0.2s ease;
-
 	a,
 	a:visited {
 		color: @colorGray5;
@@ -54,24 +49,6 @@ body {
 			font-weight: bold;
 		}
 	}
-
-	#mw-mf-last-modified {
-		padding-top: 5px;
-		padding-bottom: 5px;
-		background-color: @colorGray14;
-	}
-
-	&.active {
-
-		#mw-mf-last-modified {
-			background-color: @lastModifiedBarActiveBackgroundColor;
-		}
-
-		color: #fff;
-		a {
-			color: #fff;
-		}
-	}
 }
 
 .header {
@@ -280,9 +257,6 @@ input.search {
 	a {
 		margin: 10px 2px 2px 0;
 	}
-	.language-selector {
-		margin-top: 1em;
-	}
 }
 
 .truncated-text {
@@ -382,16 +356,9 @@ input.search {
 	visibility: hidden;
 }
 
-.content .nojs-edit {
-	display: inline-block !important;
-	visibility: visible;
-	float: right;
-}
-
 // It may be better to express these in a single class
 // or think about using extend or a mixin to stay with semantic selectors
 // https://css-tricks.com/the-extend-concept/
-.last-modified-bar #mw-mf-last-modified,
 #bodyContent .panel .content,
 .overlay .content-header,
 .overlay .panel,

resources/skins.minerva.content.styles/links.less

@@ -49,8 +49,7 @@ a {
 }
 
 // Generic class name needed
-.return-link,
+.return-link {
-#mw-mf-last-modified {
 	display: block;
 	font-size: 0.9em;
 	margin-top: 1.5em;

resources/skins.minerva.mainPage.styles/common.less

@@ -17,9 +17,9 @@
 		}
 	}
 
-	.content {
+	#page-secondary-actions {
-		#mw-mf-last-modified {
+		.language-selector {
-			padding: 5px 0;
+			margin-top: 1em;
 		}
 	}
 }

resources/skins.minerva.tablet.styles/common.less

@@ -109,10 +109,6 @@ A file for css that optimises the Minerva skin on larger devices.
 		}
 	}
 
-	#mw-mf-last-modified {
-		padding: 5px 0;
-	}
-
 	.last-modified-bar {
 		background-color: transparent;
 		padding-left: 0;
@@ -122,8 +118,6 @@ A file for css that optimises the Minerva skin on larger devices.
 }
 
 @media screen and ( min-width: @width-breakpoint-desktop ) {
-	// FIXME: Zero should use banner-container class or better - append to banner-container
-	#mw-mf-page-center .mw-mf-banner,
 	.banner-container,
 	// FIXME: Generic header class needed me-thinks!
 	.header,

resources/skins.minerva.tablet.styles/hacks.less

@@ -23,9 +23,4 @@ FIXME: Review all of these hacks to see if they still apply.
 		float: right !important;
 		clear: right !important;
 	}
-	// banners inserted by other extensions, i.e. Zero
-	#mw-mf-page-center .mw-mf-banner {
-		// !important because Zero has an inline style
-		background-clip: content-box !important;
-	}
 }