added emoji decoding support
reverted sms backup start/end calculation changes
removed emoji code
use utf8mb4 in the mysql backend to support emojis and other extended unicode characters
fixed getting cities list for a day digest
fixed 12pm showing up as 12am
Merge remote-tracking branch 'origin/development' into grapherTimespan
added timespan channels to defaults
WIP: implementing channel mappings
updated grapher to respect height of timespans for click handling
-building sources response based on channel mapping table
-changed references in bodytrackhelper from uid to guestId
-sms backup and moves api create channel mappings on update
flickr adds photo channel for itself on update
changed timespanResponder to bodytrackResponder
bodytrackresponders handle giving channels their min/max values and min/max times