Added 'NearbyMedia' floater (accessable via new button in Media Remote popup)

-Floater utilizes a slightly modified LLPanelNearbyMedia, which has fading and the 'minimal' mode disabled when its parent is a floater.

  -Due to how LL designed LLPanelNearbyMedia, only one instance should ever be allowed at a time.

Added LLNameBox. To avoid having dupilcate code, logic in LLTextBox::fromXML had to be moved to LLTextBox::initFromXML.

  -Perfomed some additional cleanup. 'name' attribute now parsed in LLUICtrl::initFromXML, or as-needed for elements not based off of LLUICtrl.

LLSlider now respects current DrawContext

Fixed the AO toolbar widget reserving too much width.

Made the "wlfAdvSettingsPopup" setting persist, and un-inverted its logic.

Altered ui initilization order. Toolbar/overlay panels now constructed further into login process.

indra/llui/lliconctrl.cpp

@@ -158,9 +158,6 @@ LLXMLNodePtr LLIconCtrl::getXML(bool save_children) const
 
 LLView* LLIconCtrl::fromXML(LLXMLNodePtr node, LLView *parent, LLUICtrlFactory *factory)
 {
-	std::string name("icon");
-	node->getAttributeString("name", name);
-
 	LLRect rect;
 	createRect(node, rect, parent, LLRect());
 
@@ -173,7 +170,7 @@ LLView* LLIconCtrl::fromXML(LLXMLNodePtr node, LLView *parent, LLUICtrlFactory *
 	LLColor4 color(LLColor4::white);
 	LLUICtrlFactory::getAttributeColor(node,"color", color);
 
-	LLIconCtrl* icon = new LLIconCtrl(name, rect, image_name);
+	LLIconCtrl* icon = new LLIconCtrl("icon", rect, image_name);
 
 	icon->setColor(color);