Find out why the full text search for airports does not work as expected

[dmaier-couchbase]

There is some logic behind this:

• If a 3 digits word is used expect that the airport code should be used: LHR = London Heathrow
• If more than 3 digits are used match the full name

Currently the full name is not working, so a search for 'London' does not return 'London Heathrow'.