Searching for entries should trigger events

[jamesarosen]

Some examples:

{
  name: 'search-started.flapjack',
  text: 'curry'
}

{
  name: 'search-fail.flapjack',
  text: 'curry'
}

{
  name: 'search-success.flapjack',
  text: 'curry',
  results: anArrayOfFlapjackGroupAndLeafInstances
}