Fix feed in error or empty (all the themes)

See https://github.com/marienfressinaud/FreshRSS/issues/634

p/themes/Dark/dark.css

@@ -565,27 +565,24 @@ a.btn {
 }
 
 /*=== Aside main page (feeds) */
-.aside_feed .tree-folder-items > .item.empty.active {
+.feed.item.empty.active {
 	background: #c95;
 }
-.aside_feed .tree-folder-items > .item.error.active {
+.feed.item.error.active {
 	background: #a44;
 }
-.aside_feed .tree-folder-items > .item.empty > a {
+.feed.item.empty > a {
 	color: #c95;
 }
-.aside_feed .tree-folder-items > .item.error > a {
+.feed.item.error > a {
 	color: #a44;
 }
-.aside_feed .tree-folder-items > .item.empty.active > a {
+.feed.item.empty.active > a {
 	color: #111;
 }
-.aside_feed .tree-folder-items > .item.error.active > a {
+.feed.item.error.active > a {
 	color: #fff;
 }
-.aside_feed .tree-folder-items > .item:not([data-unread="0"]) {
-	font-weight: bold;
-}
 .aside_feed .tree-folder-items .dropdown-menu:after {
 	left: 2px;
 }

p/themes/Flat/flat.css

@@ -570,25 +570,22 @@ a.btn {
 }
 
 /*=== Aside main page (feeds) */
-.aside_feed .tree-folder-items > .item.empty.active {
+.feed.item.empty.active {
 	background: #f39c12;
 }
-.aside_feed .tree-folder-items > .item.error.active {
+.feed.item.error.active {
 	background: #bd362f;
 }
-.aside_feed .tree-folder-items > .item.empty > a {
+.feed.item.empty > a {
 	color: #e67e22;
 }
-.aside_feed .tree-folder-items > .item.error > a {
+.feed.item.error > a {
 	color: #bd362f;
 }
-.aside_feed .tree-folder-items > .item.empty.active > a,
-.aside_feed .tree-folder-items > .item.error.active > a {
+.feed.item.empty.active > a,
+.feed.item.error.active > a {
 	color: #fff;
 }
-.aside_feed .tree-folder-items > .item:not([data-unread="0"]) {
-	font-weight: bold;
-}
 .aside_feed .tree-folder-items .dropdown-menu:after {
 	left: 2px;
 }

p/themes/Origine/origine.css

@@ -605,20 +605,20 @@ a.btn {
 }
 
 /*=== Aside main page (feeds) */
-.aside_feed .tree-folder-items > .item.empty.active {
+.feed.item.empty.active {
 	background: #e67e22;
 }
-.aside_feed .tree-folder-items > .item.error.active {
+.feed.item.error.active {
 	background: #bd362f;
 }
-.aside_feed .tree-folder-items > .item.empty > a {
+.feed.item.empty > a {
 	color: #e67e22;
 }
-.aside_feed .tree-folder-items > .item.error > a {
+.feed.item.error > a {
 	color: #bd362f;
 }
-.aside_feed .tree-folder-items > .item.empty.active > a,
-.aside_feed .tree-folder-items > .item.error.active > a {
+.feed.item.empty.active > a,
+.feed.item.error.active > a {
 	color: #fff;
 }
 .aside_feed .tree-folder-items .dropdown-menu:after {

p/themes/Pafat/pafat.css

@@ -615,25 +615,22 @@ a.btn {
 }
 
 /*=== Aside main page (feeds) */
-.aside_feed .tree-folder-items > .item.empty.active {
+.feed.item.empty.active {
 	background: #e67e22;
 }
-.aside_feed .tree-folder-items > .item.error.active {
+.feed.item.error.active {
 	background: #bd362f;
 }
-.aside_feed .tree-folder-items > .item.empty > a {
+.feed.item.empty > a {
 	color: #e67e22;
 }
-.aside_feed .tree-folder-items > .item.error > a {
+.feed.item.error > a {
 	color: #bd362f;
 }
-.aside_feed .tree-folder-items > .item.empty.active > a,
-.aside_feed .tree-folder-items > .item.error.active > a {
+.feed.item.empty.active > a,
+.feed.item.error.active > a {
 	color: #fff;
 }
-.aside_feed .tree-folder-items > .item:not([data-unread="0"]) {
-	font-weight: bold;
-}
 .aside_feed .tree-folder-items .dropdown-menu:after {
 	left: 2px;
 }

p/themes/Screwdriver/screwdriver.css

@@ -649,15 +649,12 @@ a.btn {
 }
 
 /*=== Aside main page (feeds) */
-.aside_feed .tree-folder-items > .item.empty > a {
+.feed.item.empty > a {
 	color: #e67e22;
 }
-.aside_feed .tree-folder-items > .item.error > a {
+.feed.item.error > a {
 	color: #BD362F;
 }
-.aside_feed .tree-folder-items > .item:not([data-unread="0"]) {
-	font-weight: bold;
-}
 .aside_feed .tree-folder-items .dropdown-menu:after {
 	left: 2px;
 }
@@ -997,7 +994,7 @@ opacity: 1;
 	padding: 2px 10px;
 	font-size: 0.8rem;
 }
-.box.category .item.feed .item-title {
+.box.category .item.feed:not(.empty):not(.error) .item-title {
 	color: #222;
 }
 

p/themes/base-theme/base.css

@@ -443,19 +443,16 @@ a.btn {
 }
 
 /*=== Aside main page (feeds) */
-.aside_feed .tree-folder-items > .item.empty.active {
+.feed.item.empty.active {
 }
-.aside_feed .tree-folder-items > .item.error.active {
+.feed.item.error.active {
 }
-.aside_feed .tree-folder-items > .item.empty > a {
+.feed.item.empty > a {
 }
-.aside_feed .tree-folder-items > .item.error > a {
+.feed.item.error > a {
 }
-.aside_feed .tree-folder-items > .item.empty.active > a,
-.aside_feed .tree-folder-items > .item.error.active > a {
-}
-.aside_feed .tree-folder-items > .item:not([data-unread="0"]) {
-	font-weight: bold;
+.feed.item.empty.active > a,
+.feed.item.error.active > a {
 }
 .aside_feed .tree-folder-items .dropdown-menu:after {
 	left: 2px;