StupidRobot: Change analytics log filenames to be timestamps
The filenames for the analytics logs have been changed to timestamps, in the
following format: YYYY-MM-DD.hhmmss.uid.json, where uid is a three-digit number
used to distinguish multiple logs created at the same time.
Example of a filename: 2014-07-14.185919.001.json

Other changes:
 - Remove runtime directory creation
 - Commit analytics/StupidRobot directory (with .gitignore)