Merge branch 'fix_labels_not_showing_in_todos' into 'master'

Fix labels not displayed on todos page

closes #14512,#13920

# For Todos

## Before
![Screen_Shot_2016-03-23_at_8.59.32_PM](/uploads/0c22c7674783031c9be842860082fdc2/Screen_Shot_2016-03-23_at_8.59.32_PM.png)

## After
![Screen_Shot_2016-03-24_at_12.35.06_PM](/uploads/f62d3f39c0aa2f7079368e157a3a558c/Screen_Shot_2016-03-24_at_12.35.06_PM.png)

# For Activity Feed

## Before
![Screen_Shot_2016-03-24_at_12.37.41_PM](/uploads/744370db7a4bd3782c029d80c3694ee7/Screen_Shot_2016-03-24_at_12.37.41_PM.png)

## After
![Screen_Shot_2016-03-24_at_12.37.00_PM](/uploads/9939817c14e98b50b3e16c8b7b9cf009/Screen_Shot_2016-03-24_at_12.37.00_PM.png)

See merge request !3371

app/assets/stylesheets/framework/variables.scss

@@ -28,6 +28,7 @@ $gl-link-color:        #3084bb;
 $gl-dark-link-color:   #333;
 $gl-placeholder-color: #8f8f8f;
 $gl-icon-color:        $gl-placeholder-color;
+$gl-grayish-blue:      #7f8fa4;
 $gl-gray:              $gl-text-color;
 $gl-header-color:      $gl-title-color;
 

app/assets/stylesheets/pages/events.scss

@@ -41,8 +41,17 @@
       word-wrap: break-word;
 
       .md {
-        color: #7f8fa4;
+        color: $gl-grayish-blue;
         font-size: $gl-font-size;
+
+        .label {
+          color: $gl-text-color;
+          font-size: inherit;
+        }
+
+        iframe.twitter-share-button {
+          vertical-align: bottom;
+        }
       }
 
       pre {

app/assets/stylesheets/pages/todos.scss

@@ -34,6 +34,11 @@
         color: #7f8fa4;
         font-size: $gl-font-size;
 
+        .label {
+          color: $gl-text-color;
+          font-size: inherit;
+        }
+
         p {
           color: #5c5d5e;
         }