merge changes from project qa viewer

doc/contributions.txt

indra/newview/llfloaterland.cpp

indra/newview/llfloaterworldmap.cpp

indra/newview/llinventorybridge.cpp

indra/newview/llinventorybridge.h

indra/newview/lltracker.cpp

indra/newview/lltracker.h

indra/newview/skins/default/colors.xml

indra/newview/skins/default/xui/en/floater_im_session.xml

indra/newview/skins/default/xui/en/floater_model_preview.xml

indra/newview/skins/default/xui/en/menu_inventory.xml