Rename llround(..) to ll_round(..) because of a collision with MS llround (long long round) in VS2013

Update to build on Xcode 6.0:  collection of removal of unused const variables [-Wunused-const-variable]

replace llinfos, lldebugs, etc with new LL_INFOS(), LL_DEBUGS(), etc.

streamlined LLUICtrlFactory's interface

removed redundant functionality
moved buildPanel to LLPanel

- Added selected item type (in flat list view) as criterion when determining filter type in 'Add More' panel

- Fixed LLAccordionCtrl::getSelectedTab() method. When 'selection_enabled = false' for LLAccordionCtrlTab, LLAccordionCtrl::getSelectedTab() returned NULL, even if some accordion tab was selected. Now it's OK. Method returns currently selected LLAccordionCtrlTab.

Reviewed by Mike Antipov,  Neal Orman and Richard Nelson at https://codereview.productengine.com/secondlife/r/790/

--HG--
branch : product-engine

Now accordion on panels 'Edit Outfit', 'Editing Shape', 'Editing Hair', 'Editing Eyes', 'Editing Skin', 'Group Profile' and 'Place Profile' are reset when the panels are closed and then opened again.

Reviewed by Vadim Savchuk at https://codereview.productengine.com/secondlife/r/782/

--HG--
branch : product-engine

That patch leaded to two issues:
 * broken message for empty accordion in Teleport History Panel. For now it looks like "Missing String (Didn't find... [Search].)"
 * there are multiple warnings like "LLTrans::getString: ONCE (10th time seen): Missing String in strings.xml: []" for accordions which have empty default strings (Friends list for ex.)

--HG--
branch : product-engine

Details:
1 Avoided memory leak of LLAccordionCtrlTab in LLOutfitsList::refreshList method.
2 Provided resetting selection in LLAccordionCtrl::removeCollapsibleCtrl method.

reviewed by Vadim Savchuk at https://codereview.productengine.com/secondlife/r/701/

--HG--
branch : product-engine

EXT-7823 FIXED Accordion widget was improved to show different message when no_matched_tabs  in panel or no_visible_tabs in panel.

Added "no_matched" and "no_visible" text for TeleportHistory.
+ Added "no_visible" text for My Outfit list.
+ Fixed filtering in TeleportHistory.

Reviewed by Mike Antipov at https://codereview.productengine.com/secondlife/r/591/

--HG--
branch : product-engine

- Added method LLAccordionCtrl::getExpandedTab() which search for the first expanded accordion tab. This method is a bit of hacking, but I discussed it with Vadim Savchuk.
- LLAccordionCtrlTab::isExpanded() is made 'const'. This is necessary to call it from getExpandedTab() which is also 'const'.
- Added all provided Marketplace URLs (taken from EXT-7257) to the settings.xml. So URLs can be configured without recompilation.
- Added method LLCOFWearables::getSelectedItems() which can be used to get ALL selected items (not only one).
- Class LLShopURLDispatcher is implemented in the llpaneloutfitedit.cpp.
- Added callback LLPanelOutfitEdit::onShopButtonClicked() which calls LLShopURLDispatcher to send user to the correct URL.
- Added shop button (shop_btn) widget in panel_outfit_edit.xml. It has invalid icon for now. After review I'm going to reassign the ticket to someone who will provide correct icons.

Reviewed by Vadim Savchuk and Mike Antipov at https://codereview.productengine.com/secondlife/r/569/

--HG--
branch : product-engine

Also fixed some issues in accordion caused by removing My Outfits content via Inventory:
 - updated accordion's help text to not shown nothing if there are no any tabs and filter substring is empty.
 - added check of necessity to show help text when accordion "arrange"

Reviewed by Vadim Savchuk at https://codereview.productengine.com/secondlife/r/568/

--HG--
branch : product-engine

EXT-7328 FIX If accordion tab has "fit_to_panel" flag on its height shouldn't be changed while arranging accordion tabs even if its the only tab in ctrl.

reviewed by Vadim Savchuk at https://codereview.productengine.com/secondlife/r/533/

--HG--
branch : product-engine

Reviewed by Neal Orman at https://codereview.productengine.com/secondlife/r/523/.

--HG--
branch : product-engine

EXT-7368 FIXED Implemented new "empty_accordion_text" textbox to show help text when there are no visible tabs in accordion.

* Textbox always fit whole accordion.
* This text is updated with search_term (in link to open Search floater) when new filter substring is passed to accordion.
* Accordion is notified by its tabs when their visibility is changed.

Reviewed by Vadim Savchuk at https://codereview.productengine.com/secondlife/r/486/

--HG--
branch : product-engine

EXT-7198, EXT-7491 FIXED Added mutli-selection support for outfit items and outfit tabs selection support.
- Added selecting multiple items from more than one accordion tab.
- Integrated context menus from Vadim's patch for EXT-6726 Appearance SP menus (WIP tier 2).
- Added selection to accordion control to use it instead of accordion tab focus in cases when focus is lost and outfit tab should stay selected.
- Changed "Wear" button behavior: "Wear" puts on currently selected outfit (as the tooltip reads "Wear selected outfit"). There is always an  outfit selected when the accordion is focused so for now there are no cases when only some items are selected. Separate items can be worn from context menu.
- Added moving accordion tab selection with right click. Fixed (EXT-7491) Right click on an accordion title should move selection to it.

Reviewed by Neal Orman at https://codereview.productengine.com/secondlife/r/437/

--HG--
branch : product-engine

(EXT-6722) Create modified inventory view for "my outfits" tab in top-level appearance sidebar (tier 1)

llui:
- Setting container panel for accordion tab control to dynamically add tabs to accordions.
- Added method to dynamically remove accordion tabs.
- Added LLIconCtrl image setter.

newview:
- Class LLOutfitsList - a list of agents's outfits from "My Outfits" inventory category which represents each outfit by an accordion tab with a list of items inside it.
- Class LLWearableItemsList - a list of wearable items used in each accordion tab of "My Outfits" tab.
- Class LLInventoryItemsList - a base class for LLWearableItemsList that represents inventory items by panels in LLFlatListView.
- Class LLPanelInventoryItem - inventory item representation for a flat list. Item icon is set according to item type.
- Class LLInventoryCategoriesObserver - an observer used in LLOutfitsList for monitoring changes to "My Outfits" inventory category and updating outfits accordion tabs and list of items for each outfit.

Reviewed by Mike Antipov https://codereview.productengine.com/secondlife/r/285/

--HG--
branch : product-engine

Reason:
 A) incorrect UP arrow handling in accordion control: invisible accordion tab was selected to handle selection.
 B) invalid std::map item (in empty map) was used to make selection in Flat List

Fix: added checks against empty map before use front/back item pair before selecting first/last items.
Also updated processing of the UP key in accordion control to not select invisible accordion tab.

Reviewed by Vadim Savchuk at https://codereview.productengine.com/secondlife/r/318/

--HG--
branch : product-engine

Implemented by SL EXT-6722(normal task) - Create modified inventory view for "my outfits" tab in top-level appearance sidebar (tier 1)

llui:
- Setting container panel for accordion tab control to dynamically add tabs to accordions.
- Added method to dynamically remove accordion tabs.
- Added LLIconCtrl image setter.

newview:
- Class LLOutfitsList - a list of agents's outfits from "My Outfits" inventory category which represents each outfit by an accordion tab with a list of items inside it.
- Class LLWearableItemsList - a list of wearable items used in each accordion tab of "My Outfits" tab.
- Class LLInventoryItemsList - a base class for LLWearableItemsList that represents inventory items by panels in LLFlatListView.
- Class LLPanelInventoryItem - inventory item representation for a flat list. Item icon is set according to item type.
- Class LLInventoryCategoriesObserver - an observer used in LLOutfitsList for monitoring changes to "My Outfits" inventory category and updating outfits accordion tabs and list of items for each outfit.

Known issues:
- Only first outfit tab is displayed in "My Outfits" until this tab is expanded.
- Bottom bar buttons and filter field not functioning for "My Outfits" tab since LLOutfitsList still doesn't support selection, filtering and sorting.
- "My Outfits" and "Wearing" tabs of "Appearance" side panel might need a common interface to use LLOutfitsList and LLinventoryPanel as tabs in LLPanelOutfitsInventory or "Wearing" tab should be replaces with LLOutfitsList class object i.e. a flat list.

On review - https://codereview.productengine.com/secondlife/r/285/

--HG--
branch : product-engine

Found this issue while working on EXT-6564(Fix wearable editing panels) - Every single_expansion accordion is treated like "fit_parent" is set to "true" after changes made in 9805 : e6c5f3b23be1 (fix for EXT-5128 Groups accordions should all appear on-screen w/out scrolling (open accordion should fill space)).
Updated accordion to take into account "fit_parent" property.

Reviewed by Vadim Savchuk - https://codereview.productengine.com/secondlife/r/147/

--HG--
branch : product-engine

fix EXT-5652 Make accordion in the Group Info panel a little bit wider in order to avoid horizontal scroll

--HG--
branch : product-engine

fix for EXT-5128 Groups accordions should all appear on-screen w/out scrolling (open accordion should fill space)
fix is not complete since we got horizontal scrolbar which I think is not intended...need to fix croll_container.

--HG--
branch : product-engine

--HG--
branch : product-engine

Both LLAccordionCtrl and LLAccordionCtrlTab should live in llui, not
newview. I need to make this happen in order to fix EXT-3929. No code
change was necessary (other than to change #include for predefined
headers) as these classes did not rely on any newview code.