basic authentication added for elasticsearch

fixed missing module for 'moment' and jslint missing semi colon

fixes 'derivate' function name - correct name is 'derivative'

Added new config setting timezoneOffset, usefull when your graphite server is on a different timezone thant your users browsers. This is not optimal (for example if your users have different timezones) can be improved by finding a way to query the timezone different between browser and graphite server. Or fix so that the &tz graphite parameter works for json, then all absolute filters can use UTC time.  #31

Update graphiteSrv.js

Fixed graphite import to include all graphs in a dashboard.

If 'now' is not in 'data', the result is -1, so it should be '>= 0' ...

Sets graph title when importing from graphite

Fixed typo in import