refactor javascript code move timetrack logic to timetrack class
return time stings with leading zero
more broadly border for center circle
clean up timetrack controller
clean timetrack model
simplify timetrack finding
add more helper methods to ruby classes
store pause in db
remove unused helpers
add pause method to timetrack model
move balance method to user model
fix chromium bug and show pause based on duration
prepare UI to visualize the day balance
fix to_time method
fix tooltip initialization
don't round percentage
enable :short and :long balance format
rspect :long and :short format parameters
minor UI improvments
remove config/nginx.conf