merge https://svn.aws.productengine.com/secondlife/export-from-ll/viewer-2-0@1830 https://svn.aws.productengine.com/secondlife/pe/stable-2@1839 -> viewer-2.0.0-3

JIRAS:
EXT-96 EXT-204 EXT-312 EXT-334 EXT-479 EXT-498 EXT-514 EXT-637 EXT-647 EXT-746 EXT-748 EXT-749 EXT-757 EXT-789 EXT-794 EXT-808 EXT-817 EXT-823 EXT-831 EXT-834 EXT-837 EXT-844 EXT-848 EXT-862 EXT-876 EXT-896 EXT-897 EXT-898 EXT-899 EXT-910 EXT-912 EXT-918 EXT-921 EXT-925 EXT-926 EXT-928 EXT-930 EXT-931 EXT-935 EXT-938 EXT-939 EXT-952 EXT-985 EXT-986 EXT-992 EXT-994 EXT-995 EXT-996 EXT-997 EXT-998 EXT-1001 EXT-1004 EXT-1010 EXT-1012 EXT-1016 EXT-1018 EXT-1020 EXT-1028 EXT-1041 EXT-1044 EXT-1051 EXT-1052 EXT-1061 EXT-1069 EXT-1071 EXT-1074 EXT-1075 EXT-1076 EXT-1078 EXT-1080 EXT-1081 EXT-1082 EXT-1083 EXT-1085 EXT-1092 EXT-1093 EXT-1099 EXT-1100 EXT-1101 EXT-1104 EXT-1106 EXT-1111 EXT-1113 EXT-1114 EXT-1115 EXT-1116 EXT-1118 EXT-1119 EXT-1129 EXT-1132 EXT-1135 EXT-1138 EXT-1142 EXT-1161 EXT-1162 EXT-1178 EXT-1180

* NEW DEVELOPMENT:
* EXT-898 - Add dock/undock support for camera and movement controls
* Avatar list changes
* Bottom bar changes: menu, docking, visibility
* Camera changes
* Camera & Movement Floaters
* Dockable Floaters (LLDockableFloater)
* Removed LLListCtrl
* Toast / Notification changes: signal / destruction changes, ordering
* Nearby chat input should display active voice indicator

QA NOTES:
* Message Well Window  is ready to be tested for regression & matching the spec.
* Verify Group List Item L&F
* Verify All tabs in People Panel
* Verify that Picks behavior is not changed