Smaller font and leing height for sidebar elements

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/generic/sidebar.scss

@@ -39,12 +39,12 @@
     }
 
     a {
+      padding: 7px 15px;
+      font-size: 13px;
+      line-height: 18px;
       color: $gray;
       display: block;
       text-decoration: none;
-      padding: 8px 15px;
-      font-size: 14px;
-      line-height: 20px;
       padding-left: 16px;
 
       &:hover {
@@ -114,9 +114,6 @@
       width: $sidebar_collapsed_width;
 
       li a {
-        font-size: 14px;
-        padding: 8px 15px;
-        text-align: left;
         padding-left: 16px;
       }
     }