INT-831 fixing collection filter, reduced space

and moved sidebar style where it belongs, to `./src/sidebar/index.less`.

Author: rueckstiess

src/index.less

@@ -13,6 +13,7 @@
 @import "./src/sampling-message/index.less";
 @import "./src/statusbar/index.less";
 @import "./src/tour/index.less";
+@import "./src/sidebar/index.less";
 
 #intercom-launcher {
   height: 0px !important;

styles/sidebar.less renamed to src/sidebar/index.less

@@ -56,7 +56,8 @@
     color: @gray5;
   }
   .list-group {
-    line-height: 24px;
+    margin-bottom: 10px;
+    // line-height: 24px;
     overflow-y: auto;
     width: 100%;
     z-index: -1;
@@ -132,7 +133,7 @@
 
       i {
         color: lighten(@text-color, 40%);
-        line-height: 24px;
+        // line-height: 24px;
       }
 
       &.active {

styles/index.less

@@ -9,11 +9,12 @@
 @octicons-font-path: "fonts";
 @fa-font-path: "fonts";
 
+@sidebar-width: 220px;
+
 // Tweaks to bootstrap
 @import "./10strap.less";
 @import "./grid-xl.less";
 @import "./message-background.less";
-@import "./sidebar.less";
 
 html, body {
   height: 100%;