updated public Dexcom, BG, and TDD logs from master branch
merged churn_data.py from master branch
merged G4 importer script from master branch
updated dexcom_stats.py to use new file passing instead of filename passing
updated to use new file passing, fixed bug in Dexcom.logbook() for creating days array
updated to use new file passing
updated to use new file passing for Ping
updated to use new file passing for YFD
moved logbook.html and Timeplot script to served static dirs
added static dirs to config for serving results of churn_data.py
fixed bizarre replacement of <,> with HTML character entity references
updated to serve plain Timeplot logbook in /upload