survana.js: increment session counter for when studies wrap
appcache.js: moved ApplicationCache-related code to install.js
survana.js: made the Finish button take into account whether the workflow wraps or not
app.ejs: entry point for standalone mobile apps
routes/study.js: added code that triggers the standalone installation page when ?app is appended to the study url; the manifest file is now rendered with content-type=text/cache-manifest to make offline caching work on iPads
layout.ejs: disabled zooming since it interfered with data entry
npm: bump version to 0.3.6