Add CHANGELOG item for new sidebar

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

CHANGELOG

@@ -13,8 +13,8 @@ v 7.11.0 (unreleased)
   -
   -
   -
-  -
-  -
+  - Move snippets UI to fluid layout
+  - Improve UI for sidebar. Increase separation between navigation and content
   - Improve new project command options (Ben Bodenmiller)
   - Prevent sending empty messages to HipChat (Chulki Lee)
 

app/assets/stylesheets/generic/sidebar.scss

@@ -133,10 +133,13 @@
 .collapse-nav a {
   position: fixed;
   top: 46px;
-  padding: 5px 13px 5px 13px;
   left: 198px;
   font-size: 13px;
   background: transparent;
+  width: 32px;
+  height: 32px;
+  text-align: center;
+  line-height: 32px;
 }
 
 .collapse-nav a:hover {