minor #16628 [WebProfilerBundle] Added a top left border radius to the minified to… (Jelle Kapitein)

This PR was squashed before being merged into the 2.8 branch (closes #16628).

Discussion
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[WebProfilerBundle] Added a top left border radius to the minified to…

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | N/A
| License       | MIT
| Doc PR        | N/A

The minified toolbar (to us at least) looked very out of place in all of our projects. Adding a border radius to the top left fixes that.

Chrome 46
![schermafbeelding 2015-11-23 om 09 29 06](https://cloud.githubusercontent.com/assets/6209772/11332470/41240b96-91c6-11e5-9d03-4738ff213295.png)

Firefox 42
![schermafbeelding 2015-11-23 om 09 29 53](https://cloud.githubusercontent.com/assets/6209772/11332476/55fbf574-91c6-11e5-898b-1ba2590a813b.png)

Safari 9
![schermafbeelding 2015-11-23 om 09 30 33](https://cloud.githubusercontent.com/assets/6209772/11332485/6351525a-91c6-11e5-8cbc-14b7efd82ce0.png)

Cannot test on IE/Edge at the moment, will be able to later today.

(The screenshots do not have commit 0459912523)

Commits
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ca9f446 [WebProfilerBundle] Added a top left border radius to the minified to…

src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/toolbar.css.twig

@@ -1,5 +1,6 @@
 .sf-minitoolbar {
     background-color: #222;
+    border-top-left-radius: 4px;
     bottom: 0;
     display: none;
     height: 30px;
@@ -8,6 +9,7 @@
     right: 0;
     z-index: 99999;
 }
+
 .sf-minitoolbar a {
     display: block;
 }
@@ -357,6 +359,8 @@
 /* Override the setting when the toolbar is on the top */
 {% if position == 'top' %}
     .sf-minitoolbar {
+        border-bottom-left-radius: 4px;
+        border-top-left-radius: 0;
         bottom: auto;
         right: 0;
         top: 0;