Updated javascript_scenes.js and javascript_people.js

Health element scene begins with player going to healthcenter and finding it locked. Sahiya prompts
her to obtain keys from three people. Every time she obtains one key, she goes to the healthcenter a
nd is unable to enter. Sahiya tells her the importance of next key and where to find it. On obtainin
g all three keys, player is able to enter the healthcenter