History of Models and application data

Replaced find by findall to avoid deprecated errors in the application

Updated command to specify the versions of moment and moment-timezone used in the tutorial. App does not function on the newer versions.Web/Apps/Build/Modern_web_app_architecture/Models_and_application_data Web/Apps/Fundamentals/Modern_web_app_architecture/Models_and_application_data

Updated command to specify the versions of moment and moment-timezone used in the tutorial. App does not function on the newer versions.

Should be offsets rather than offset according to data json in https://github.com/moment/moment-timezone/archive/0.3.0.zip

According to the json files located here:

The original read, "below the var app = new EmberApp(); line", which isn't wrong, but could lead beginners to add the import lines inside that block. Hopefully, the suggested revision is a little clearer.