Restore ETags from Express
Remove dash so etag from render overrides the default one
Adding cache times to crud configs
Add setting cache validity for entry points
Adding surrogate keys to tileset and map entry points
Adding helper for purging multiple urls
Add urge callers to crud configs
Adding purging to map entry point and api path to crud utils
Adding forgotten purgeCallers
Adding purging for map_data
Adding purging to tileset entry point
Adding purging to poi_category entry point
Adding purging to poi entry point
Add desc to jsdoc
JSDocs update
First round of addressing comments
Changing cache validity key names
Applying new cacheValidity key names
Adding comments explaining purpose of purgeCallers
Add mapData purging on poi and poi_category changes