* report active users in graphite stats
* use bus to publish system stats
* metrics: avoid using events unless we have to
this commit also changes the default interval
for updating the stats gauges. Seems like the old values
was a product of previous metrics implementation
* check upn field if email address isn't present, support for adfs
* correctly set login to the user's email address if not specified by the oauth server
* break up GenericOAuth.UserInfo into helper functions
* refactor util encryption library so it doesn't have to import log
* add util.SplitString to handle space and/or comma-separated config lines
* go fmt
* use utf8mb4 character set for connections to mysql
* use utf8mb4 character set for tables, shorten varchar fields used in unique indexes
* migration type to update table character set
* update table character sets
* set charset for temp_user.status
* gofmt
* break out go and js build commands
* support oauth providers that return errors via redirect
* remove extra call to get grafana.net org membership
* removed GitHub specifics from generic OAuth
* readded ability to name generic source
* revert to a backward-compatible state, refactor and clean up
* streamline oauth user creation, make generic oauth support more generic
Dan Cech