Adds Etags to json responses
Adds ETag response header for html responses
Adds LastModified header to requests for a Photo
Adds debugger. Ran php artizan config:publish annotatecms/debugger
Adds debugger config
Adds testing specific db config
Adds config for MongoDB class
Sets the config on Image class
Renames ImageStore to MongoDbImageStore
Renames ImageStore to MongoDbImageStore