Always show the Legend button.

Also clean up some jshint warnings.
Merge pull request #393 from NICTA/alwaysShowLegend

Always show the Legend button.
message fix
Merge pull request #394 from NICTA/messageUpdate

message fix
typos
Merge pull request #395 from NICTA/messageUpdate

typos
Show a message when a group is empty.
Merge pull request #396 from NICTA/emptyGroupMessage

Show a message when a group is empty.
Improvements to cache population.
Merge pull request #397 from NICTA/populateCacheImprovements

Improvements to cache population.
Don't shuffle URLs when populating cache.
Merge branch 'populateCacheImprovements'
Print names of data source when cache population fails.
Whitelisting and blacklist of CKAN layers.
Vic blacklist
Don't blacklist servers that return errors.
Merge pull request #398 from NICTA/dontBlacklistServers

Don't blacklist servers that return errors.
black list for vic
starting down leaflet caching
capturing url