simplified job button css class

ui/css/treeherder.css

@@ -72,3 +72,34 @@ body {
 .show-jobs-button {
     width: 85px;
 }
+
+.job-btn {
+  display: inline-block;
+  *display: inline;
+  margin-bottom: 0;
+  *margin-left: .3em;
+  line-height: 20px;
+  color: #333333;
+  text-align: center;
+  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.75);
+  vertical-align: middle;
+  cursor: pointer;
+  background-color: #f5f5f5;
+  *background-color: #e6e6e6;
+  border: 1px solid #cccccc;
+  *border: 0;
+  border-color: #e6e6e6 #e6e6e6 #bfbfbf;
+  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
+  border-bottom-color: #b3b3b3;
+  padding: 0 6px;
+  font-size: 10.5px;
+  -webkit-border-radius: 3px;
+     -moz-border-radius: 3px;
+          border-radius: 3px;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffffff', endColorstr='#ffe6e6e6', GradientType=0);
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
+  *zoom: 1;
+  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
+     -moz-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
+          box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
+}

ui/partials/thJobButton.html

@@ -1,4 +1,4 @@
-<span class="btn {{ job.display.btnClass }}"
+<span class="job-btn {{ job.display.btnClass }}"
       ng-class="{'btn-large selected-job': (selectedJob==job), 'btn-mini': (selectedJob!=job)}"
       title="{{ hoverText }}"
       ng-click="viewJob(job)"