Merge pull request #1 from bewest/master

tweak handling no bgs
Merge pull request #2 from bewest/config/init

Config/init
remove extra brace
Merge branch 'master' of github.com:jasoncalabrese/cgm-pebble
merged bewest/config/init
Merge branch 'master' of github.com:bewest/cgm-pebble
fixed stale data alert; var and whitespace clean up
add a + to the delta so it's always a + or -
Merge pull request #2 from nightscout/feature/port-fixes

port fixes from my old repo