Improved fancylineedit and consistency

- fixed some RTL issues. I removed isSideStored
and useLayoutDirection. Instead we simply flip the
sides if RTL is in use.
- added the fader animation and clear icon that we
use in Designer already.
- fixed the double toplevel popup focus issues we
had with the locator menu.
- removed some redundant labels and reset buttons

src/plugins/coreplugin/generalsettings.cpp

@@ -151,8 +151,6 @@ QWidget *GeneralSettings::createPage(QWidget *parent)
             this, SLOT(resetInterfaceColor()));
     connect(m_page->resetEditorButton, SIGNAL(clicked()),
             this, SLOT(resetExternalEditor()));
-    connect(m_page->resetLanguageButton, SIGNAL(clicked()),
-            this, SLOT(resetLanguage()));
     connect(m_page->helpExternalEditorButton, SIGNAL(clicked()),
             this, SLOT(showHelpForExternalEditor()));
 #ifdef Q_OS_UNIX