Fixed some border-related bugs in the single question view

sass/_discussion-answers.scss

@@ -43,3 +43,9 @@ div.answer-block {
     }
   }
 }
+
+div.answer-own {
+  border-top: 1px solid #eee;
+  overflow:hidden;
+  padding-left: flex-grid(1.2);
+}

sass/_discussion-questions.scss

@@ -31,7 +31,7 @@ div.question-controls {
       padding:0px 20px 5px;
 
       a {
-        color: darken(#F6EFD4, 50%); 
+        color: darken(#F6EFD4, 50%);
 
         &.on span{
           font-weight: bold;

sass/_question-view.scss

@@ -168,17 +168,16 @@ div.question-header {
         font-size: 13px;
 
         .block {
-          border-bottom: 1px solid #ddd;
-          border-top: 1px solid #fff;
+          border-top: 1px solid #ddd;
           padding: 15px 0;
           display: block;
 
-           &:first-child {
+          &:first-child {
             border-top: 0;
           }
-          // &:only-of-type {
-          //   border: 0;
-          // }
+          &:last-child {
+            border-bottom: 1px solid #ddd;
+          }
         }
 
         form.post-comments {