Add camera restore/save feature from FS/Ansa

indra/newview/app_settings/settings_per_account_alchemy.xml

indra/newview/llagentcamera.cpp

indra/newview/llagentcamera.h

indra/newview/llfloatercamera.cpp

indra/newview/skins/default/textures/icons/Cam_Recall.png

indra/newview/skins/default/textures/icons/Cam_Save.png

indra/newview/skins/default/textures/textures.xml

indra/newview/skins/default/textures/toolbar_icons/view.png

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