White space cleanup

Cleanup of whitespace before adding changes to the file.
Fetch candle history chronologically

By specifying $gt: -1 on the s (candle start minute) field the candle
documents will get fetched in chronological order. This means we can
skip one _.min, _.max check and the sortCandles function is rendered
obsolete.
Merge pull request #97 from iceydee/localDB

Performance optimisation - fetch candles chronologically (localDB branch)