Lazyload shuttle stop images

###### Description:
The high-res images of the stops (thanks again @colinmcintyre17) take a second or 2  to load over a decent network connection, and it would be a nice UX enhancement to lazyload these images with a loader placeholder

###### Steps To Reproduce:


###### Workaround:


###### Risks:
TBD

###### Acceptance Criteria:
