Merge branch 'rs-issuable-filter-count-style' into 'master'

Fix alignment of the filter counter for Issuables

## Before:

![Screen_Shot_2015-10-22_at_4.00.15_PM](/uploads/5f54faf3b056c1b3e2cb1b6d5c27614b/Screen_Shot_2015-10-22_at_4.00.15_PM.png)

## After:

![Screen_Shot_2015-10-22_at_3.58.04_PM](/uploads/127a90795aed7d41c053a735bbee0e3b/Screen_Shot_2015-10-22_at_3.58.04_PM.png)


See merge request !1667

app/assets/stylesheets/pages/issuable.scss

@@ -80,3 +80,11 @@
     }
   }
 }
+
+.issuable-filter-count {
+  span {
+    display: block;
+    margin-bottom: -16px;
+    padding: 13px 0;
+  }
+}

app/views/projects/issues/_issues.html.haml

@@ -5,8 +5,9 @@
       .nothing-here-block No issues to show
 
 - if @issues.present?
-  .pull-right
-    %span.issue_counter #{@issues.total_count}
-    issues for this filter
+  .issuable-filter-count
+    %span.pull-right
+      = @issues.total_count
+      issues for this filter
 
   = paginate @issues, theme: "gitlab"

app/views/projects/merge_requests/_merge_requests.html.haml

@@ -5,8 +5,10 @@
       .nothing-here-block No merge requests to show
 
 - if @merge_requests.present?
-  .pull-right
-    %span.cgray.pull-right #{@merge_requests.total_count} merge requests for this filter
+  .issuable-filter-count
+    %span.pull-right
+      = @merge_requests.total_count
+      merge requests for this filter
 
   = paginate @merge_requests, theme: "gitlab"