Fixed styles pane visibility when docked to right.
https://bugs.webkit.org/show_bug.cgi?id=112348

Patch by Vladislav Kaznacheev <kaznacheev@chromium.org> on 2013-03-14
Reviewed by Pavel Feldman.

* inspector/front-end/ElementsPanel.js:
(WebInspector.ElementsPanel.prototype._splitVertically):
* inspector/front-end/SidebarPane.js:
(WebInspector.SidebarPane.prototype.setExpandCallback):
(WebInspector.SidebarPaneTitle):
(WebInspector.SidebarTabbedPane.prototype.addPane):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145815 268f45cc-cd09-0410-ab3c-d52691b4dbfc