Add sentence casing, fix groups page buttons, fix dark gray variable

app/assets/stylesheets/framework/variables.scss

@@ -24,6 +24,7 @@ $gray-lightest: #fdfdfd;
 $gray-light: #fafafa;
 $gray-lighter: #f9f9f9;
 $gray-normal: #f5f5f5;
+$gray-dark: darken($gray-light, $darken-dark-factor);
 $gray-darker: #eee;
 $gray-darkest: #c4c4c4;
 

app/assets/stylesheets/pages/groups.scss

@@ -27,12 +27,6 @@
   }
 }
 
-.group-buttons {
-  .notification-dropdown {
-    display: inline-block;
-  }
-}
-
 .groups-header {
   @media (min-width: $screen-sm-min) {
     .nav-links {

app/assets/stylesheets/pages/projects.scss

@@ -143,10 +143,6 @@
   margin-top: 0;
 }
 
-.group-buttons {
-  margin-top: 15px;
-}
-
 .project-repo-buttons,
 .group-buttons {
   .btn {
@@ -178,7 +174,7 @@
   }
 
   .project-action-button {
-    margin: 15px 5px 0 5px;
+    margin: 15px 5px 0;
     vertical-align: top;
   }
 

app/assets/stylesheets/pages/tree.scss

@@ -172,7 +172,7 @@
   position: relative;
   z-index: 2;
 
-  .download-button {
+  .project-action-button {
     margin-left: $btn-side-margin;
   }
 }

app/views/projects/show.html.haml

@@ -67,7 +67,7 @@
               Set up CI
         - if koding_enabled? && @repository.koding_yml.blank?
           %li.missing
-            = link_to 'Set Up Koding', add_koding_stack_path(@project)
+            = link_to 'Set up Koding', add_koding_stack_path(@project)
 
   - if @repository.commit
     .project-last-commit{ class: container_class }

app/views/shared/notifications/_button.html.haml

 - if notification_setting
-  .project-action-button.dropdown.notification-dropdown.inline
+  .project-action-button.dropdown.inline
     = form_for notification_setting, remote: true, html: { class: "inline notification-form" } do |f|
       = hidden_setting_source_input(notification_setting)
       = f.hidden_field :level, class: "notification_setting_level"