simple ping to see if terrain server up
Merge remote-tracking branch 'origin/master' into terrainServerCheck
use event instead
Merge branch 'terrainServerCheck' of https://github.com/NICTA/nationalmap into terrainServerCheck
put error message back in
delay featureinfo popup to allow dbl click in leaflet
Re-add comment and fix typo.
Merge pull request #406 from NICTA/terrainServerCheck

Terrain server check
Merge pull request #409 from NICTA/leafletDblClk

delay featureinfo popup to allow dbl click in leaflet
Merge remote-tracking branch 'origin/master' into refactor