Minor UI updates (#6884)

webapp/sass/layout/_sidebar-left.scss

@@ -37,7 +37,7 @@
 
     .sidebar-item__name {
         display: inline-block;
-        max-width: 167px;
+        max-width: 160px;
         overflow: hidden;
         text-overflow: ellipsis;
         vertical-align: top;
@@ -81,8 +81,8 @@
             @include single-transition(all, .15s, ease-in);
             display: block;
             font-weight: 600;
-            height: 50px;
-            line-height: 50px;
+            height: 45px;
+            line-height: 40px;
             padding: 0;
             text-decoration: none;
             width: 100%;
@@ -144,7 +144,7 @@
 
     .nav-pills__container {
         -webkit-overflow-scrolling: touch;
-        height: calc(100% - 120px);
+        height: calc(100% - 115px);
         overflow: auto;
         position: relative;
     }
@@ -215,6 +215,10 @@
 
                 &.has-close {
                     &:hover {
+                        .sidebar-item__name {
+                            max-width: 152px;
+                        }
+
                         .btn-close {
                             @include opacity(.8);
                             display: block;
@@ -228,7 +232,7 @@
                         font-size: 21px;
                         font-weight: 600;
                         position: absolute;
-                        right: 18px;
+                        right: 15px;
                         top: 0px;
 
                         &:hover {