Small UI improvements to git blame page

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/generic/files.scss

@@ -90,12 +90,7 @@
           border-right: none;
         }
         background: #fff;
-        padding: 5px;
-      }
-      .author,
-      .blame_commit {
-        background: $background-color;
-        vertical-align: top;
+        padding: 8px;
       }
       .lines {
         pre {

app/assets/stylesheets/pages/tree.scss

@@ -89,6 +89,10 @@
     td.blame-commit {
       background: #f9f9f9;
       min-width: 350px;
+
+      .commit-author-link {
+        color: #888;
+      }
     }
     td.blame-numbers {
       pre {

app/views/projects/blame/show.html.haml

@@ -16,14 +16,19 @@
         - @blame.each do |raw_commit, line|
           %tr
             %td.blame-commit
-              %span.commit
+              .commit
                 - unless @prev_commit && @prev_commit.sha == raw_commit.sha
                   - commit = Commit.new(raw_commit, @project)
-                  = link_to commit.short_id, namespace_project_commit_path(@project.namespace, @project, commit), class: "commit_short_id"
-                   
-                  = commit_author_link(commit, avatar: true, size: 16)
+                  .commit-row-title
+                    %strong
+                      = link_to_gfm truncate(commit.title, length: 35), namespace_project_commit_path(@project.namespace, @project, commit.id), class: "cdark"
+                    .pull-right
+                      = link_to commit.short_id, namespace_project_commit_path(@project.namespace, @project, commit), class: "monospace"
                      
-                  = link_to_gfm truncate(commit.title, length: 20), namespace_project_commit_path(@project.namespace, @project, commit.id), class: "row_title"
+                  .light
+                    = commit_author_link(commit, avatar: false)
+                    authored
+                    #{time_ago_with_tooltip(commit.committed_date)}
                 - @prev_commit = raw_commit
             %td.lines.blame-numbers
               %pre