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

CHUI-643 FIXED Collapsed conversations floater has huge right padding: prevent of a rewriting mOriginMinWidth and mOriginMinHeight to default values

CHUI-230, CHUI-232, CHUI-261 Forced resize of a conversation's floater in the IM-container; support of the rectControls for IM-conversations; fixed LLFloater and LLMultiFloater for the correct hosting of floaters with mSaveRect

The states and dimensions of Conversations floater panes are saved in per account settings.

- Now tabs are closed with Ctrl+W as expected

reviewed by Mani

Submitting on behalf of Paul Guslisty.

Reviewed by Mike: https://codereview.productengine.com/secondlife/r/66/

--HG--
branch : product-engine

--HG--
branch : product-engine

Reviewed (conceptually) by Richard and James

Implemented "legacy_header_height" hack to account for new art being 25 pixels
tall instead of legacy 18 pixels -- it auto-sizes the floaters to be taller.
Made all floaters have resize handles, just disable and make invisible if unused.
This simplifies the floater construction logic.  Floater header height now lives
in floater.xml, not as a global saved setting.  Reviewed with Richard.

DEV-11254 DEV-11254 DEV-2003: DEV-21567 DEV-37301 EXT-104 EXT-138 EXT-217 EXT-256 EXT-259 EXT-259 EXT-328 EXT-348 EXT-386 EXT-399 EXT-403 EXT-460 EXT-492 EXT-492 EXT-531 EXT-537 EXT-684

improved text editor (handles multiple fonts simultaneously as well as inline widgets)

svn merge -r 128442:129343 svn+ssh://svn.lindenlab.com/svn/linden/branches/skinning/skinning-18 into svn+ssh://svn.lindenlab.com/svn/linden/branches/viewer/viewer-2.0.0-3

Merge skinning-14 to viewer-2, including refactoring many floaters to register them with LLFloaterReg, support for introspection of ParamBlock based UI widgets to dump XML schema, splitting llfolderview.cpp into three separate files to unravel dependencies and skeleton for for LLListView widget.  Resolved conflicts in these files:
lldraghandle.h, lluictrl.h, llchiclet.cpp, llfolderview.h/cpp, lliinventorybridge.cpp, llpanelpicks.cpp, llviewermenu.cpp, floater_mute.xml, floater_preferences.xml, notifications.xml, panel_preferences_audio.xml, panel_preferences_graphics1.xml, panel_region_general.xml
svn merge -r124961:126284 svn+ssh://svn.lindenlab.com/svn/linden/branches/skinning/skinning-14

ignore-dead-branch