Added CSS style for the light side panel fix button, added CSS style for single-line list items (file list widget).

modules/backend/assets/css/october.css

@@ -964,6 +964,11 @@
 .control-filelist ul li .checkbox label:before {
   border-color: #cccccc;
 }
+.control-filelist.single-line ul li a span.title {
+  text-overflow: ellipsis;
+  overflow: hidden;
+  white-space: nowrap;
+}
 .control-filelist.hero ul li {
   background: #ffffff;
   border-bottom: none;
@@ -14855,6 +14860,13 @@ body.mainmenu-open .mainmenu-collapsed ul {
   opacity: 1 !important;
   filter: alpha(opacity=100) !important;
 }
+#layout-side-panel .fix-button-content-header .fix-button {
+  top: 9px;
+  right: 7px;
+}
+#layout-side-panel .fix-button-content-header .fix-button i {
+  color: #eeeeee;
+}
 #layout-side-panel .sidepanel-content-header {
   background: #95a5a6;
   color: white;

modules/backend/assets/less/controls/filelist.less

@@ -167,6 +167,16 @@
         }
     }
 
+    &.single-line {
+        ul {
+            li a span.title {
+                text-overflow: ellipsis; 
+                overflow: hidden;
+                white-space: nowrap;
+            }
+        }
+    }
+
     &.hero {
         .a-hover() {
             background: @color-filelist-hero-hover-bg;

modules/backend/assets/less/core/variables.less

@@ -72,6 +72,7 @@
 @color-scrollbar-thumb:                      #aaa;
 @color-scrollpanel-border:                   #efefef;
 @color-scrollpanel-fix-button:               #aaaaaa;
+@color-scrollpanel-fix-button-light:         #eeeeee;
 @color-scroll-indicator:                     #bbbbbb;
 
 @color-richeditor-toolbar:                   #dddddd;

modules/backend/assets/less/layout/sidepanel.less

@@ -25,6 +25,15 @@
         }
     }
 
+    .fix-button-content-header .fix-button {
+        top: 9px;
+        right: 7px;
+
+        i {
+            color: @color-scrollpanel-fix-button-light;
+        }
+    }
+
     .sidepanel-content-header {
         background: #95a5a6;
         color: white;