Console errors on Batch Changes apply

Created by: malomarrec

Latest master pull

Steps to reproduce:

1. Pull latest master branch (39eed9d359137021c4fa720ad1bd0199ec2a678c)
2. Run enterprise/dev/start.sh
3. Setup tokens, etc
4. Set rolloutWIndow (from the docs example)

"batchChanges.rolloutWindows": [
    {
        "rate": "unlimited"
      },
      {
        "rate": "3/minute",
        "days": [
          "monday",
          "tuesday",
          "wednesday",
          "thursday",
          "friday"
        ],
        "start": "08:00",
        "end": "16:00"
      },
  ],

5. Create a Batch Change

Expected behavior:

Change is schedule and ran within the next few minutes, given no other batch change is created.

Actual behavior:

Crash output (console)

Uncaught Error: Invalid regular expression: /^(?i)(unlimited|[0-9]+/(sec|secs|second|seconds|min|mins|minute|minutes|hr|hrs|hour|hours))$/: Invalid group

SyntaxError: Invalid regular expression: /^(?i)(unlimited|[0-9]+/(sec|secs|second|seconds|min|mins|minute|minutes|hr|hrs|hour|hours))$/: Invalid group
    at new RegExp (<anonymous>)
    at _validateStringNode (42:907)
    at validate (42:541)
    at testAlternatives (42:632)
    at _validateNode (42:695)
    at validate (42:554)
    at _validateObjectNode (42:1154)
    at validate (42:531)
    at _validateArrayNode (42:1019)
    at validate (42:536)
    at eval (errors.js?9c65:12)