web: Add uglification/concatenation of javascript files

web/.gitignore

web/Gruntfile.js

web/app/css/.gitignore

web/app/index.html

web/assets/js/app.js

web/assets/js/attendance.js

web/assets/js/attendance.search.js

web/assets/js/default-charts.js

web/assets/js/doc.js

web/assets/js/fake-data.js

web/assets/js/global.js

web/assets/js/install.js

web/package.json