New features:
• Ability to drop/undrop a runner
• Now transmits the fact that a runner is dropped and the reason

Fixes / Improvements:
• Styling and wording tweaks to make the app easier to use
• Moved the way a runner is dropped to the runner info page
• Tranimissions now have more accurate time in and out values
  and will usually be less data to transmit
• Deleting a race now deletes all the runners, stations, and
  transmissions associated with that race

Note:
• versions 1.3.0+ will not be compatible with any version older
  than 1.3.0 when transmitting

Developer Notes:
• Lots of special case helpers added for when developing in the browser
  since mongodb doesn't work on web