Make reticle automatically issue query on move end

[prushforth]

Currently queries only occur when the user hits enter or spacebar. In moving this feature towards a more accessible future, I believe it is appropriate to issue the query on move end when the reticle is deployed.

When we move to a square reticle with feature index, we'll perhaps be in a position to merge our treatment of tabbing through features already in the map layer and querying features from the server.