make transition to build history work

app/components/branch-row.coffee

@@ -5,7 +5,7 @@
 `import config from 'travis/config/environment'`
 
 BranchRowComponent = Ember.Component.extend
-
+  routing: Ember.inject.service('-routing')
   tagName: 'li'
   classNameBindings: ['build.last_build.state']
   classNames: ['branch-row']
@@ -86,6 +86,6 @@ BranchRowComponent = Ember.Component.extend
       @triggerBuild()
 
     viewAllBuilds: (branch) ->
-      console.log('view all builds')
+      @get('routing').transitionTo('builds')
 
 `export default BranchRowComponent`

app/components/status-icon.coffee

@@ -31,7 +31,10 @@ StatusIconComponent = Ember.Component.extend
   ).property('status')
 
   isEmpty: (->
-    if @get('status') == null || @get('status') == ''
+    unless @get('status')
+      true
+    else
+      if @get('status') == ''
         true
       else
         false

app/styles/app/layouts/branches.sass

@@ -179,7 +179,7 @@
   @media #{$medium-up}
     width: 10em
     left: 0
-    padding: .3em
+    padding: .4em
     transform: translate(-42%, -170%)
     border: 1px solid $teal-dark
     li