Added FORCE INDEX to force MySQL to use the correct index for the stream read API
Added osd_duplicate_data_point_read index
Revert observer_stream_data default character encoding to UTF-8. It was UTF-16 due to a legacy bug fix attempt, but in practice our servers are all using UTF-8.
Fixed database config file path in README file
Merge pull request #761 from sdanzig/readme-fix

Fixed database config file path in README file
updated default observer definitions

in order to be compatible with the latest concordia version modified in ac38d0dfc4c16809f7587f8677282806464159f9.
Merge pull request #793 from stevenolen/master

updated default observer definitions
Merge pull request #803 from ohmage/master

merge in db setup changes
Merge pull request #804 from ohmage/ohmage-2.16

merge new ohmage-2.16 changes to the user_setup_password branch