clean up context blocks

Author: ckj

src/sentry/static/sentry/less/sentry.less

@@ -873,8 +873,7 @@ a.icon-share {
   }
 
   .btn-default {
-    background: #fff;
-    border-color: rgba(70, 82, 98, .16);
+    border-color: rgba(70, 82, 98, .18);
   }
 
   .checkbox {
@@ -1455,7 +1454,8 @@ ul.traceback {
   }
 
   code {
-    padding: 1px 3px;
+    padding: 0;
+    background: #fff;
     font-size: inherit;
     color: inherit;
   }
@@ -1479,7 +1479,6 @@ ul.traceback {
   }
 
   &.expanded {
-    color: #000;
 
     > p {
       color: #000;
@@ -1525,19 +1524,19 @@ ol.context {
     padding-left: 20px;
     font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
     color: #222;
-    background-color: #fafafa;
+    background-color: #f6f7f8;
     line-height: 22px;
     font-size: 12px;
     white-space: pre;
     white-space: pre-wrap;
     word-wrap: break-word;
   }
   > li.active {
-    background-color: #f0f0f0;
+    background-color: #f6f7f8;
     min-height: 22px;
 
     pre {
-      color: @black;
+      color: @grayDark;
     }
   }
 
@@ -1567,7 +1566,8 @@ ol.context-line {
       min-height: 22px;
     }
     > li.active {
-      background-color: #e0e0e0;
+      background-color: @blue;
+      color: #fff;
     }
   }
 }