Merge pull request #13 from nightscout/dev

Dev
Retro delta always b/w; no delta if bg = '---'
No delta for CGM errors
fixed #283 by changing  to
Merge pull request #277 from jimsiff/wip/bgDelta

Delta BG minor fixes
got rid of the toolbar hide/show feature since it wasn't used
Merge pull request #284 from nightscout/wip/no-hiding

Remove the toolbar hide/show feature since it wasn't used
Merge pull request #254 from nightscout/wip/add-ssl

add option to host over ssl
only return the most recent treatment data via websockets; added opts to treatments.list()
Merge pull request #287 from nightscout/wip/treatment-filter#286

Reduce the amount a treatments sent via websockets to display on the chart for #286
rm empty file in lib/api/entries/
Merge pull request #296 from dduugg/feature/rm-middleware

rm empty file in lib/api/entries/
Merge branch 'nightscout-dev' into wip/iob-cob