added shared groups to represent groups managed by server
local group actions changed to modify roster groups
code cleanup on contacts manager including removing unneeded roster manager
update script to clean up localization files
removed ui option to create an empty group
Former-commit-id: 06a9db4836fa2753a913e2314a8c003380416eac
renamed lightning record's lightSource field to source
added delta script for db column change
added attribute method comments for IData and DefaultGeometryData
Former-commit-id: b6c50729919ea8a9b29ca963e18f68268c3a0b7f
