avoid multiple lines for sidebar buttons

app/templates/deployments/single.hbs

 {{#architecture-viewer graph=graphModel}}
 
-    <button {{action 'applyQueueUpdates'}} type="button" class="btn {{if changelogQueue.empty 'btn-default' 'btn-warning'}}" disabled={{ changelogQueue.empty }} title="Updates are possible when the deployment changed and new information is ready to get visualized!">
-        <i class="glyphicon glyphicon-refresh"></i> Apply Updates {{#if changelogQueue.available}}({{ changelogQueue.size }}){{/if}}
+    <button {{action 'applyQueueUpdates'}} type="button" class="btn {{if changelogQueue.empty 'btn-default' 'btn-warning'}} btn-sm" disabled={{ changelogQueue.empty }} title="Updates are possible when the deployment changed and new information is ready to get visualized!">
+        {{!-- <i class="glyphicon glyphicon-refresh"></i> --}} Apply Updates {{#if changelogQueue.available}}({{ changelogQueue.size }}){{/if}}
     </button>
 
     {{!-- sidebar will be closed since both views do not contain the same elements --}}
     {{#if (eq model.mode 'architectures')}}
-        {{#link-to 'deployments.single' model.systemId tagName='button' class='btn btn-default'}}
+        {{#link-to 'deployments.single' model.systemId tagName='button' class='btn btn-default btn-sm'}}
             Deployments
         {{/link-to}}
     {{else}}
-        {{#link-to 'architectures.single' model.systemId tagName='button' class='btn btn-default'}}
+        {{#link-to 'architectures.single' model.systemId tagName='button' class='btn btn-default btn-sm'}}
             Architecture
         {{/link-to}}
     {{/if}}