Merge from lindenlab/viewer-beta

BuildParams

doc/contributions.txt

indra/newview/llagent.cpp

indra/newview/llfloaterpostcard.cpp

indra/newview/llfloaterpreference.cpp

indra/newview/llfloaterpreference.h

indra/newview/llfloatersnapshot.cpp

indra/newview/llsidetray.cpp

indra/newview/llsidetray.h

indra/newview/llviewermenufile.cpp

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

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

...newview/skins/default/xui/en/panel_preferences_colors.xml

indra/newview/skins/default/xui/pl/strings.xml